PLATE LXXXIV 



Backdoor Bay 



Cape Bakne 



Gate Royds 



McMURDO SODND 



GENERAL VIEW LOOKING SOUTHERLY FROM CAPE ROYDS TO CAPE BARXB 

 Showing the heavily glaciated surface of kenyte lava and moraines near Cape Royds. The dark lump in the middle 

 distance is an erratic about fifty tons in weight. Pony Lake, to the right, is a shallow, glacier-scooped rock basin. Duiing 

 the epoch of maximum glaciation. the whole of this area was buried under an ice sheet to a depth of from 800 to 



1000 feet (244-yo5 m.) 



\^To face p. '252 



