Re: NASA Worldwind, & Large scale features in Africa

on Mon, 06 Jun 2005 17:00:04 +0100, Aidan Karley
<doIlookDAFTenoughTOpost@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> sez:

` In article <d81d26$jbl$1@xxxxxxxxxxxxxxxxxxxxxx>, Pete wrote:

` > Drifting about the
` > Idehan Murzuq at high res with WorldWind provides some astounding
` > views, showing the clusters of dark circles in unlikely locations
` >
` BTW, does the Wabar impact structure show up? N21d 30' E 50d 28m
` http://www.somerikko.net/old/geo/imp/refer.htm#w
`
Sorry, nothing seems to show up there but an absolutely featureless
sea of dunes. I can see a few bits of bedrock ridged aligned approx
NNE/SSW poking through the dunes in a very few spots at what the
position readout tells me is around 20.8deg by 51.1deg, but nothing
else particularly stands out in the region. Perhaps the lighting
was poor for the contrast required. The size at 100m or so ought
to be just enough to show up, but then again, the dunes are sort of
like a mass of ~100m -sized features of probably similar height,
so they probably make the worst possible background for such a shape
to show up in. I wonder how it was ever found in the first place.
Like Idehan Murzuq, this is one of those spots that look like the
last place on earth you'd want to find yourself wandering.

There is a text notation at the corner of 22 x 51 which appears
to say "Al 'Ubaytah", but as much as I can zoom in there seems
to be nothing there but dunes.

--
==========================================================================
vincent@triumf[munge].ca Pete Vincent
Disclaimer: all I know I learned from reading Usenet.
.