https://kit10notk9.livejournal.com/ ([identity profile] kit10notk9.livejournal.com) wrote in [personal profile] bk_forever 2020-04-25 11:20 am (UTC)

If they had more clumps of hardened mud around them I would suspect crawdad/crayfish holes.
I think the smaller one is more of an air vent. You may want to Google what burrowing creatures live in your area, to narrow down the possibilities.

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