by JohnD » Wed Aug 24, 2011 7:10 am
My thnakls to bystander for merging mione with this thread.
I did look for, but didn't see, any prior posts to mine about this.
As it is in 'Sky photography', "new, spectacular, or mysterious sky images", I forgive myself for not looking there for this image there!
And 'ant lions'? Yes, analogous, but irrational, captain. Would that people did not indulge their whimsy quite so much. Serious Qs present themselves, for instance, what is the material of the scenery around? Is it loose dust, shale or scree, that is unstable, and so would collapse into a cavern? The heat of an impact into soft stuff would still have fused it into a solid crater, and as I said, pit craters aren't conical - or rather they are but upside down, with overhanging edges. Much to speculate about without saying, Ooooooo, it looks like an ant lion's lair!
John
My thnakls to bystander for merging mione with this thread.
I did look for, but didn't see, any prior posts to mine about this.
As it is in 'Sky photography', "new, spectacular, or mysterious sky images", I forgive myself for not looking there for this image there!
And 'ant lions'? Yes, analogous, but irrational, captain. Would that people did not indulge their whimsy quite so much. Serious Qs present themselves, for instance, what is the material of the scenery around? Is it loose dust, shale or scree, that is unstable, and so would collapse into a cavern? The heat of an impact into soft stuff would still have fused it into a solid crater, and as I said, pit craters aren't conical - or rather they are but upside down, with overhanging edges. Much to speculate about without saying, Ooooooo, it looks like an ant lion's lair!
John