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Thread: Geography Question

  1. #1
    Junior Member
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    Default Geography Question

    I've just posted the location of some strange circular lakes in the random files section. Anybody know what they are?

    http://www.googleearthhacks.com/foru...?do=file&id=51

  2. #2
    Administrator Mickey's Avatar
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    Default

    Wow, good find. I have no idea what they are, but maybe someone else will be able to help out.

  3. #3
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    Smile Thermokarst lakes

    The circular depressions are thermokarst lakes formed by melting permafrost. There is a useful account of these at:

    http://users.skynet.be/ougseurope/su...ermokarst.html

  4. #4
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    Thanks very much! Thought they might have been maars, but they're too widespread. Looks like permafrost does some interesting stuff!

  5. #5
    Administrator Mickey's Avatar
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    Nice work, GeoDave! I've edited the listing on that file to include this new information.

    Mickey

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