AT the station maintained from September 1935 to June 1936 near the centre of the Western Ice Cap in North-East Land (80° N., S 20° 30 E., approximately) by the Oxford University Arctic Expedition 1935–36, it has been found that, contrary to expectation1, the ice-cap is not frozen to any great depth. While a shaft was being excavated in the firn beneath the station, a concealed crevasse was discovered—there was absolutely no trace of it at the surface, even during the period of summer thaw—and investigated to a distance of some hundreds of feet in the horizontal direction. At a depth of some 70 ft. below the surface was a lake of water varying in depth from 3 ft. to 6 ft. The bed of the lake was of ice.
J. E. Fjeldstad, Geografiska Annaler, 15, 314 (1933).