To: Bob
To me, it looks like a massive sinkhole, something that you'd see on the surface that was caused by a huge subterranean collapse.
I agree and a collapse may be consistent with a lack of any major seismic activity.
61 posted on
01/29/2013 4:06:25 PM PST by
PA Engineer
(Liberate America from the Occupation Media.)
To: PA Engineer; Bob
Comparison of the before and after images in #45 shows no change in terrain topography that I could detect.
The sole difference I see is the change in albedo in the area surrounding the north entrances — as if someone blew soot on the whole area.
85 posted on
01/30/2013 1:09:15 AM PST by
TXnMA
("Allah": Satan's current alias... "Barack": Allah's current ally...)
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