When one looks at a mole hill a lot of the times (depending on the type of sand i would imagine) the sand that comes out is in a near perfect cylindrical shape. How is this possible when the mole pushes this sand from bottom to top (outside)? Everything starts underground as far as i know. How?
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They push the soil with their paws. It’s not perfect. Usually the ground is pushed up where they tunnel. Otherwise they push excess soil out the front.
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