New Collapse at Cassell Pit, January 21, 2006

by Bob Zimmerman (posted January 23, 2006)

Looking down from high point above pit. The entrance crawl appears open. Note Dave West standing next to drop.	Another high view with Dave in picture.	Moving down to get better view of waterfall.
View of waterfall and overhang at collapse.	Close-up of new collapse below overhang and waterfall.	Dave throws a rock, attempting to knock out tiny chockstone between large boulders on overhand.
Dave, from above, drops rocks on overhang.	It moves!	It moves again, but does not fall.
A last view. Compare with above: little chockstone has been replace by larger rock thrown by Dave.	The Greenbank Radio Telescope. (photo by Ben Diedrich)

A New Side by Side Comparison

by Bob Zimmerman (posted January 23, 2006)

With the help of the comparison that Charles Danforth had done after the first collapse, I have made a new side-by-side comparison below. Note the differences. Apparently the rocks under the overhang dropped off, leaving that overhang in a very precarious position. It is so precarious that it moved when hit by one of Dave's thrown rocks.

After first collapse.	After second collapse.

Last updated: January 23, 2006
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