Smithsonian Report. 1941. — Einarsson 



1. Many Waterfalls Are Formed Where the Streams from the Lava 

 Plateau Plunge Over Its Bounding Escarpment. 



The lava banks show the typical columnar structure formed in many lava flows when they cool. 



2 A Waterfall Formed Where a Stream Drops into a Crack in the Lava 



Plateau. 



