[Texascavers] Martian sinkhole

2011-08-18 Thread Lee H. Skinner
Could this entrance have been triggered by a meteor falling over a lava tube? http://hirise.lpl.arizona.edu/ESP_023531_1840 and click on this one in your browser for maximum detail: http://hirise.lpl.arizona.edu/images/2011/details/cut/ESP_023531_1840.jpg Lee Skinner

[Texascavers] Martian sinkhole

2011-08-18 Thread Mixon Bill
How much of the missing material has disappeared via the pit into the underground cavern? I'd say all of it. Symmetry remarkable. Would be nice to know how steep that slope is. -- Mixon The only thing worse than being talked about is not being talked

[Texascavers] Martian sinkhole

2011-08-18 Thread Lee H. Skinner
Could this entrance have been triggered by a meteor falling over a lava tube? http://hirise.lpl.arizona.edu/ESP_023531_1840 and click on this one in your browser for maximum detail: http://hirise.lpl.arizona.edu/images/2011/details/cut/ESP_023531_1840.jpg Lee Skinner

[Texascavers] Martian sinkhole

2011-08-18 Thread Lee H. Skinner
Could this entrance have been triggered by a meteor falling over a lava tube? http://hirise.lpl.arizona.edu/ESP_023531_1840 and click on this one in your browser for maximum detail: http://hirise.lpl.arizona.edu/images/2011/details/cut/ESP_023531_1840.jpg Lee Skinner