AN ICE CLIFF, ADELIE LAND 
Walls of ice came down steeply to the sea, ‘‘ floating extensions of land ice and glacier tongues, riven and dis- 
torted by gaping crevasses." ‘‘Adélie Land is so overwhelmed with ice that even at sea level 
the rock was entirely hidden. Here was a picture of Northern Europe 
during the ‘Great Ice Age,’ some 50,000 years ago” 
