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North America, Greenland, Borgtinde, Wiedermann Fjord, East Greenland

Borgtinde, Wiedermann Fjord, East Greenland. The objectives of the Sheffield University Expedition were to gain access to and investigate the Lilloise and Borgtinde intrusions. Our expedition was essentially geological but since to reach the Lilloise intrusion involved crossing the Kronborg Glacier, which had defeated a party of Oxford geologists in 1966, we needed a party of competent climbers. Our Norwegian sealer sailed from Oslo on July 15 and had great difficulties in getting through the pack ice to Wiedermann Fjord, where we were put ashore finally on July 25. From the fjord three days were taken in establishing Camp I on the east side of the Kronberg Glacier, some seven miles inland from Base at 2200 feet. At Camp I the party split so that P. E. Brown, F. Moseley, P. Fearnehough and N. Robinson worked the Lilloise intrusion while R. D. Brown and I continued some 30 to 40 miles farther up the Kronborg Glacier to investigate the Borgtinde intrusion. A successful crossing of the glacier, directly from Camp I, was made on July 29 to reach the Lilloise intrusion and the first specimens collected revealed the intrusion to be a gabbroic and ultrabasic mass and not a syenite. The crossing, though complex and potentially hazardous, was mainly a question of route finding rather than technical difficulty. Once across the glacier, access to the rocks of the intrusion was limited by icefalls, steep cliffs and in particular rotten rock, which proved most unsuitable for climbing. Brown and I left Camp I late on July 29. Pulling pulka sledges and traveling by night to get the best snow conditions, we succeeded in ascending the Kronborg to reach the intrusion on August 1, where we established Camp IV at 4500 feet. Detailed work on the Borgtinde intrusion continued until August 8. Camp V was then pitched at 6400 feet in the snow basin on the north of the Borgtinde mass. Despite bad weather, work from this camp culminated in an ascent of the main peak of the Borgtinde. The best estimate of altitude, using barometry, is 11,085 feet and so it is probably the second highest summit yet reached in the Arctic. Commencing our retreat on August 10, we eventually reached Camp I on the 14th. We sailed from Wiedemann Fjord on August 18.

N. J. SOPER, Sheffield University (England)