[LINK] Libya from Space, over Twitter....

Fernando Cassia fcassia at gmail.com
Wed Apr 27 11:23:42 AEST 2011


On Tue, Apr 26, 2011 at 10:02 PM, Pilcher, Fred <Fred.Pilcher at act.gov.au> wrote:
> Does anyone know what those circular structures in the Libya shot are? Impact structures? Volcanos?
>
> Fred

>From the comments: "I know another astronaut who had a less poetic
name of these outcrops, as they are called. They reminded him of cow
pies in his rural home country. Actually such outcrops are hard
sub-soil where the softer soil has been eroded away (by wind and
sand), leaving the hard rock stand out clearly. Their size can vary
from a few hundred metres to several kilometres. This point
22.000355,25.000763 in the right outcrop is exactly at the border of
Libya, Egypt, and Sudan."

FC



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