The tasks allotted to the detachment were:--

(1) A general survey of the whole unmapped area covered by the Expedition, on a scale of 1 inch to 4 miles.

(2) A detailed survey of the immediate environs of Mount Everest on the scale of 1 inch to 1 mile.

(3) A complete revision of the existing -inch map of Sikkim.

With the exception of a few rough notes and sketches by early travellers and missionaries in the seventeenth and eighteenth centuries, our first knowledge of the Southern portion of the Tibetan province of Tsang dated from the epoch of the Survey of India by trained native explorers in the middle of the nineteenth century. Thus, much of the area visited by the Expedition in 1921 was traversed by the explorer Hari Ram during the course of his two journeys in 1871-2 and 1885 respectively. At that time, however, foreign surveyors were not regarded with favour in Tibet; work could only be carried on surrept.i.tiously, and the resulting map merely consisted of a small-scale route traverse which gave no indication of the surface features beyond the explorer's actual route.

The first rigorous survey undertaken in the neighbourhood was that carried out by Captain C. H. D. Ryder, R.E. (now Colonel Ryder, C.I.E., D.S.O., Surveyor-General of India), during the Tibet Mission of 1903-1904. During the stay of the Mission at Kampa, the -inch survey was carried as far West as longitude 88; while, on the subsequent return march up the Tsangpo Valley, surveys were extended as far as the Southern watershed of the great river--the so-called Ladak Range--in lat.i.tude 29 approximately.

West of longitude 88 there thus remained a stretch of unsurveyed country some 14,000 square miles in area, between the Ladak Range on the North and the Great Himalaya Range on the South--the latter forming the Northern frontier of Nepal. The Mount Everest Expedition provided an opportunity of making good the whole of this area, with the exception of some 2,000 square miles at the extreme Western end, into which, in view of the restrictions of the Indian Foreign Department, I did not feel justified in penetrating.

Fortunately, Colonel Bury's plans contemplated an outward Northerly journey via Shekar and Tingri to the Western flanks of Mount Everest, whence the reconnaissance of the mountain was to be carried out from West to East, parallel to the Northern frontier of Nepal. This rendered feasible the mapping of the whole unsurveyed area between the Southern watershed of the Tsangpo and the Great Himalaya Range, as far West as longitude 85 30', without in any way infringing the Foreign Department's orders and restrictions.

For the purpose of the detailed survey of the Mount Everest regions, it was arranged for my a.s.sistant, Major Wheeler, to make a thorough test of the Canadian pattern of photo-survey apparatus, of which he had had previous experience in the Canadian Rocky Mountains. This method of survey, which had not hitherto been employed in India, is particularly adapted for use in high mountain regions. Fortunately, the experimental outfit, which had recently been ordered from England, was delivered just in time to accompany the Expedition. Wheeler's account of his season's work will be found in Appendix II.

With a view to carrying out the revision survey of Sikkim while awaiting the arrival of the members of the Expedition from England, the Survey Detachment was authorised to a.s.semble at Darjeeling early in April, six weeks before the date fixed for the start of the Expedition. In spite of an unusually wet and cloudy spring, the three surveyors made such good use of their time that 2,500 square miles of country were completed before the advance of the Expedition necessitated the temporary abandonment of this work.

After completing the necessary preliminaries with Colonel Bury, I myself left Darjeeling on May 13, intending to rejoin the remainder of the Expedition in Sikkim. Continuous rain, however, rendered the latter task impossible; the Sikkim roads were, moreover, blocked in several places by severe landslips, so that I was only with difficulty able to reach Kampa by the 28th. It transpired, however, that there was no cause for hurry, since the main body of the Expedition, travelling via the Chumbi Valley, had encountered greater difficulties than mine, and did not arrive at Kampa until June 5. While awaiting their arrival, I filled in the time by occupying and re-observing from Colonel Ryder's old triangulation stations of 1903, overlooking the Kampa Plain.

I had received no news whatever of the Expedition or of the outside world since leaving Darjeeling three-and-a-half weeks previously.

Consequently the death of my old friend Dr. Kellas on the very day of their arrival at Kampa came to me as a very severe shock.

The Sikkim revision-survey having been so much hampered by bad weather, I decided to take only two of the three surveyors with the Expedition into Tibet, leaving Surveyor Turabaz Khan to complete the comparatively dry areas of Northern Sikkim before the arrival of the monsoon. This he succeeded in doing at the cost of considerable personal discomfort, returning to Darjeeling in July.

It was not until we reached the summit of the Tinki Pa.s.s on June 11 that we found ourselves for the first time looking into unsurveyed country.

From here onwards as far as Tingri the survey was kept up by Lalbir Singh, whose unflagging energy alone enabled him to keep pace with the long marches of the Expedition. Each morning he was away with his plane-table and squad of coolies long before our breakfast was served, seldom reaching camp before nightfall. The gathering clouds and other ominous signs of a rapidly approaching monsoon, however, forbade any respite.

On arrival at Tingri, after spending a week in fruitless efforts to observe the triangulated peaks of the main Himalayan Range through the dense monsoon clouds which were daily piling up more and more thickly from the South, I departed on June 26 with Surveyor Gujjar Singh on a short trip to explore and map the upper valley of the Bhong Chu.

Our first march led across the wide Tingri Plain, past the hot spring village of Tsamda, to the hamlet of Dokcho, at the Southern extremity of the Sutso Plain. This plain is covered with the ruins of numerous villages and watch-towers, the haunt of countless rock-pigeons. They are all of loftier and more substantial construction than the miserable hovels which form the scattered hamlets of to-day--indicating, apparently, the former presence of a large and warlike population. It is impossible even to hazard a guess at the age of these ruins, which may have preserved their present state for generations in the comparatively arid climate of Tibet. Many of the towers are 60 feet or more in height; roofs and floors have all disappeared, but the ma.s.sive mud walls in many instances still bear the marks of the wooden shuttering used in their erection. This method of construction is unknown, I believe, in Tibet at the present day.

The next day's march, skirting the Western edge of the plain, brought us to the village of Phuri, where the river flows in a flat-bottomed, cultivated valley, between bare brown hills. On the 28th we camped at Menkhap-to, the highest village in the valley. The headman, a sort of local "warden of the marches," refused to see me and shut himself up in his house, guarding his door with three huge mastiffs who effectively frustrated the efforts of my messengers to establish communications.

Evidently he feared the subsequent results to himself of harbouring strangers. The remaining villagers were quite friendly, however, and supplied all my requirements. One man, the owner of a gun, surprised me by a request for 12-bore cartridges just after I had greatly shocked his neighbour's Buddhist susceptibilities by killing a b.u.t.terfly for my collection! Much snow is reported to fall at Menkhap-to, which is deserted during the winter months, when the inhabitants descend to Menkhap-me ("lower Menkhap") and the Sutso Plain.

Above Menkhap-to the road leaves the main valley and proceeds Westwards over a spur known as the Lungchen La (17,700 feet). This spur commands an extensive view across the wide, uninhabited Pekhu Plain, with its three lakes, as far as the snowy range running North-west from the summit of Gosainthan. On a fine day, the whole panorama can be sketched in from a couple of fixings on either side of the pa.s.s; unfortunately, at the time of our arrival bad weather had set in, and the whole snow-range was hidden in cloud. I had therefore to leave Gujjar Singh camped near the summit of the pa.s.s to await a fine day for the completion of his surveys, and myself returned at the end of the month to Tingri, where I rejoined Mr. Wollaston, who had been detained at headquarters by an outbreak of enteric fever amongst the Expedition servants.

Wild game is plentiful in the Upper Bhong Valley. I shot numerous hares, some ramchakor and a bar-headed goose during the trip; while Gujjar Singh caught a young, week-old burhel lamb on the summit of the Lungchen Pa.s.s, which, however, died after three weeks in captivity. Gazelle are common on the Sutso Plain.

By the end of June, Lalbir Singh had finished the inking of his previous surveys, and was ready for fresh work. Accordingly, after spending a couple of days in examining his board, and checking the spelling of his village names with the aid of the local Tibetan officials, I despatched him on a lengthy programme of work in Pharuk and Kharta. It was three months before I saw him again.

About this time a messenger arrived from the Dzongpen of Nyenyam, inviting us to visit his district, which lay four marches to the Southwest, in the valley of the Po Chu or Bhotia Kosi R. Although Nyenyam was not one of the districts specifically mentioned in our pa.s.sport, Wollaston and I decided, with the concurrence of Colonel Bury, to avail ourselves of the opportunity of visiting this little-known area.

Leaving Tingri on July 13, with the interpreter Gyalzen Kazi and Surveyor Gujjar Singh, who had now returned after completing his work on the Lungchen Pa.s.s, we camped that evening at Langkor, a small village at the Western edge of the Tingri Plain. A cantilever bridge which spans the Gya Chu opposite the village had been carried away by floods shortly before our arrival, and the whole population of the hamlet, male and female, were busily engaged in its reconstruction, working in relays to the accompaniment of prolonged and vigorous blasts on a "conch" which a monk was diligently blowing in order--as it was explained to us--to avert further rainfall until the bridge should be completed. His efforts were rewarded with tolerable success, as the rain held off all day in spite of the threatening storm-clouds which loomed up from the South-west.

The most interesting feature of Langkor is an ancient temple, an appanage of the great Drophung monastery of Lhasa. This building, which is said to be over 1,000 years old, contains a sacred stone alleged to have been hurled across the Himalayan Range from India, and to have pitched in the Tingri Plains. The name Tingri is said to be derived from the noise ("ting") made by the falling stone. The stone is carefully preserved inside a wooden box, which is opened with much ceremony on the first day of the Tibetan new year. The temple, which is managed by a committee of fifteen civilian monks (nyakchang), also contains a library of 4,400 books, and an image of the Indian saint Tamba Sanye which is popularly believed to have grown by itself from the ground _in situ_.

Crossing the Tang La (17,980 feet) in a driving snowstorm, a long march of 22 miles brought us next day to the bleak village of Tulung, in the upper valley of the Po Chu. As we descended the Western side of the pa.s.s the snow-clouds gradually dispersed, disclosing glimpses of the magnificent twin summits of Gosainthan (26,290 feet), 30 miles to the West. Several of our coolies succ.u.mbed to mountain sickness on the pa.s.s, with the result that my bedding and the kitchen box only reached camp at 9 p.m.

On July 15 our road lay for 8 miles along the flat valley of the Po Chu; the river then turns sharply Southwards, pa.s.sing for 3 miles through a gorge of granite and schist. Bushes of wild currant, gooseberry, berberis and dog-rose here begin to appear, and around the village of Targyeling, where we camped, were smiling fields of mustard and buckwheat, in addition to the usual Tibetan crops of barley and dwarf pea. After a month spent in the bleak Tibetan uplands, it was a relief to pitch our tents in a homely green field, alongside a rippling brook lined with familiar ranunculus, cow parsley, forget-me-not, and a singularly beautiful pale mauve cranesbill, and to feast our eyes on the glorious purple of the wild thyme which clothed the hillsides in great patches of colour.

The next day, still following the course of the Po Chu, we reached Nyenyam, a large and very insanitary village which is known under the name of Kuti by the Nepalis who const.i.tute the majority of its inhabitants. These Nepali traders (Newars) have their own Hindu temple in the village. There is also a Nepalese chauki (court-house) with a haqim (magistrate) invested with summary powers of jurisdiction over Nepali subjects; he is specially charged with the settlement of trade disputes, and with the encouragement of Tibeto-Nepalese trade and commerce.

As is customary in all important districts of Tibet, there are here two Dzongpens, who by a polite fiction are known as "Eastern" and "Western"

(Dzongshar and Dzongnup) respectively. Actually, the functions of the two Dzongpens are identical; the _raison d'etre_ of the double regime being an attempt to protect the peasants from extortion by the device of providing two administrators, who, in theory at least, act as a check upon each other's peculations. At the time of our arrival, those two worthies were so busy preparing a joint picnic that we had considerable difficulty in getting their attention.

I spent three days in exploring the neighbourhood of Nyenyam, while Wollaston was engaged in his botanical and zoological pursuits. Gujjar Singh, with the plane-table, was detained by bad weather higher up the valley. Below Nyenyam the river enters a very deep, narrow gorge; pines and other forest trees begin to appear. The road, which here becomes impa.s.sable for animals, crosses the river four times in 6 miles by cantilever bridges before reaching the village of Choksum, but I could find no trace of the portion described by explorer Hari Ram in 1871 as consisting of slabs of stone 9 to 18 inches wide supported on iron pegs let into the vertical face of the rock at a height of 1,500 feet above the river. At Choksum (10,500 feet) the river falls at an average rate of 500 feet per mile. The Nepal frontier is crossed near Dram village, some 10 miles further down stream, but owing to the vile state of the weather, which rendered even the roughest attempts at surveying impossible, I abandoned all idea of reaching the spot.

On July 20 we retraced our steps 9 miles up the valley to Tashishong, where we found Dr. Heron encamped, together with Gujjar Singh, whose work had been hung up for a week by continued cloud and rainfall. Heron returned Northwards next day, while we followed a rough easterly track leading over the Lapche Range to the village of the same name in the valley of the Kang Chu. The weather on this day was atrocious, and our last pretence of accurate surveying broke down. We were unable to reach Lapche village by dusk, and spent a somewhat cheerless night on boulders in drenching rain at 14,600 feet, with no fuel except a few green twigs of dwarf rhododendron.

Lapche (La-Rimpoche, "precious hill") is sacred as the home and birthplace of Jetsun Mila Repa, a wandering lama and saint who lived in Southern Tibet in the eleventh century, and who taught by parables and songs, some of which have considerable literary merit. The two princ.i.p.al works ascribed to him are an autobiography, or namtar, and a collection of tracts called Lab.u.m, or the "myriad songs." They are still among the most popular books in Tibet.[20] His hermit-cell still remains under a rock on the hillside, and his memory is preserved by an ancient temple and monastery, the resort of numerous pilgrims, alongside which we pitched our tents.

[20] _Journey to Lhasa and Central Tibet_, by S. C. Da.s.s, C.I.E., page 205, footnote by Hon. W. W. Rockhill.

Lapche village is situated on a spur overlooking the junction of two branches of the Kang stream--the latter being a tributary of the Rongshar River, which, in turn, joins the Bhotia Kosi River in Nepal.

The extreme dampness of the local climate is indicated by the trailing streamers of lichen which festoon the trees, and by the pent roofs of the buildings. The village contains some ten or twelve houses, of which half are occupied by Tibetans and half by Nepalese subjects (Sherpas)--each community having its own headman. The inhabitants were very friendly and pleasant, and gave us a good deal of information. The village is deserted during the winter months, when the whole population migrates across the border into Nepal. The Tibetans pay no taxes to Nepal during their half-yearly sojourn in the lower valley; conversely, the Nepalis during their summer residence in Lapche are not subject to Tibetan taxation or to the imposition of ulag (forced labour). The Tibetans of Lapche pay their taxes in the form of b.u.t.ter direct to the Lapche monastery, the head lama, or abbot, of which resides at Phuto Gompa near Nyenyam. The Nepal frontier is some 10 miles below Lapche, opposite the snow-peak of Karro Pumri. Katmandu can be reached in eight days, but the track is bad and very little trade pa.s.ses this way.

Transport arrangements necessitated a day's halt at Lapche, which was fortunately enlivened by the timely arrival of a large parcel of letters and newspapers, which Colonel Bury had thoughtfully sent after us from Tingri--almost the last news of the outside world which we were to receive for over two months.

From Lapche we proceeded to the Rongshar Valley, crossing the Kangchen and Kangchung ("big snow" and "little snow") pa.s.ses. Descending the hill to Trintang village, where we camped on July 25, the clouds lifted momentarily, disclosing an amazing view of the superb snow summit of Gauri-Sankar towering magnificently above us just across the valley.

This mountain, which is called by the Tibetans Ch.o.m.o Tsering, or Trashi Tsering, is the westernmost of a group of five very sacred peaks known collectively as Tsering Tse-nga ("Tsering five peaks"). Unfortunately, owing to constant clouds, I was unable to identify with certainty the remaining four peaks of Tingki Shalzang, Miyo Lobzang, Chopen Drinzang and Tekar Drozang. Owing to the sacred nature of the Rongshar Valley, the slaughtering of animals is strictly forbidden; the large flocks and herds of the villagers are only sold for slaughter in the adjoining districts of Tingri and Nepal, and we were only able to buy a sheep on promising not to kill it until after quitting the valley.

Trintang village occupies a plateau 1,750 feet above the level of the river; 1,400 feet below is the village of Tropde, to which the Trintang residents all descend in winter. Rongshar Dzong, which is situated in the lower village, has no importance; at the time of our visit the Dzongpen had gone to his home on leave of absence, leaving his affairs in the hands of a steward.

A day's halt being necessary in order to collect transport, I took the opportunity of descending the Rongshar Valley as far as the Nepal frontier, while Gujjar Singh endeavoured, without much success, to pick up the threads of his survey by identifying the snowy peaks which occasionally afforded brief glimpses through rifts in the clouds. The Rongshar River drops 1,400 feet in 7 miles between Tropde and the Nepal frontier, which is crossed at an alt.i.tude of roughly 9,000 feet.

On July 27 we marched 20 miles up the Rongshar Valley to the village of Tazang (Takpa-Santsam, "limit of birch trees"), which, as its name implies, is situated at the extreme upper limit of the forest zone. On the way we pa.s.sed the village and monastery of Chuphar, whence a track leads South-east over the difficult snow-pa.s.s of Menlung ("vale of medicinal herbs") to the villages of Rowaling and Tangpa in the Kangphu Valley of Nepal.

Tazang had already been visited by Colonel Bury, a month previously. The local headman was too drunk, on the evening of our arrival, to send out the necessary messages summoning the village transport-yaks from their grazing grounds. In consequence, our baggage was only got under weigh at 11 a.m. next morning, and we were compelled to pitch our tents at a grazing camp (16,500 feet) after only covering 9 miles. The weather showed signs of improvement in proportion as we receded from the Himalayan gorges, but dense banks of cloud still obscured all the hill-tops. An easy march over the Phuse La (17,850 feet) brought us on the 29th to the bleak village of Kyetrak, situated at the foot of the great Kyetrak Glacier, on the extreme Southern edge of the Tingri plain--an area which we had already surveyed six weeks previously.

From Kyetrak we proceeded via the Lamna La to Chobuk, thence following the tracks of the Expedition headquarters which Colonel Bury had just transferred from Tingri to Kharta in the lower Bhong Chu Valley. On reaching headquarters on August 2, we found Colonel Bury in sole occupation--Mallory and Bullock having left that very morning on a reconnaissance of the Eastern approaches to Mount Everest.

The weather during the whole of August was such as to render out-of-door survey operations impossible. Gujjar Singh was occupied during the month in adjusting and inking his surveys, while I filled in several days in making tracings of all work so far completed, after which, for the remainder of the season, I joined the mountaineers, whose doings are recorded elsewhere in this book.

On the return journey in October I despatched Gujjar Singh from Gyangkar Nangpa to complete the remaining portions of the Sikkim revision-survey; at the same spot I picked up Lalbir Singh, who, after completing his survey of the Pharuk and Kharta areas, had crossed the Bhong Chu below Lungdo and worked his way back via Tashirakar and Sar. Travelling via Kampa and Lachen Valley, we reached Darjeeling on October 16. Tracings of the new survey were hastily finished and sent to press, with the result that a complete preliminary -inch map in six colours was published before the last members of the Expedition had sailed for England. A -inch preliminary sketch-map of the environs of Mount Everest was also prepared by Major Wheeler at the same time for the use of the mountaineers in discussing the details of their next year's climb.

The out-turn of work during the Expedition was as follows:--

-inch revision survey 4,000 square miles -inch original survey 12,000 square miles Detail photo-survey (environs of Mount Everest) 600 square miles

The surveyors all worked splendidly under difficult and trying conditions. Major Wheeler had probably the hardest time of any member of the Expedition, and his success in achieving single-handed the mapping of 600 square miles of some of the most mountainous country in the world is sufficient proof of his determination and grit. It is difficult for those who have not actually had the experience to conceive the degree of mental and physical discomfort which results to the surveyor from prolonged camping at high alt.i.tudes during the monsoon, waiting for the fine day which never comes. Such was our fate for four months during the Expedition of 1921, yet on looking back one feels that the results were well worth while. The discomforts soon fade from recollection; the pleasures alone remain in one's memory, and there is not one of us but would gladly repeat our season's experiences, if so required.

APPENDIX II