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Monday, February 16, 2004

The Volcanology of Mars
Volcanoes three times higher than Mt.Everest, with craters 50 miles wide. There are lots of interesting photos here, including flyovers of many of the larger volcanoes.
Volcanology of Mars
"Tremendous size is certainly one of the most spectacular features of the great shield volcanoes discovered by Mariner 9. Olympus Mons is by far the largest volcano in the solar system."
"The huge size of the great shields is partly a consequence of Mars' surface being a single plate. The Martian volcanoes remained stationary over their hotspots. In contrast, plate movement on the Earth moves growing shields away from their hotspots, limiting their sizes."
via MainlyMartian
posted at 2/16/2004 06:26:48 PM

Monday, February 09, 2004

Megalithomania
A huge site befitting its subject. Every type of megalith is represented here, from your basic Henge to Crannogs, Raths and Sheela-na-Gigs.
Megalithomania - Home
"Curiously signposted 'The Dolmen' as if there is only one on the planet, this is not a 'dolmen' but a kist. The massive 2m square, 1m thick capstone rests on three stones forming three sides of the square chamber. A fourth stone (probably the fourth side) lies 5m away.
The location offers unparalleled views of the railway freight yard below. On one side of the capstone are what seems to be a perfectly arranged hexagon of cup marks, but these are simply where a sign used to be attached to the it."
posted at 2/9/2004 09:21:39 PM