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#pingo formation #frost heave #cryoturbation #permafrost #ice lens #geocryology #arctic geology

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#pingo #ice lens #conical mound #arctic geology #permafrost #cold region

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#pingo formation #ice core #permafrost process #geomorphology #hydrolaccolith #ice lens

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#pingo #permafrost mound #arctic geology #ice lens #hydrolaccolith #geocryology