The little mud towers standing in these wet fields are built by burrowing crawfish, which dig down to the water table and stack the excavated pellets around the entrance. They spend most of the year underground and are the reason crawfish appear in a pasture with no visible water in it. The burrows matter beyond the animal: they carry air and water down into heavy prairie clay, and the crawfish themselves are a staple food for herons, ibises and raccoons across the coastal prairie.
Getting there
29.8200, -95.9000
Locations are approximate and may be inaccurate, on private land, or otherwise inaccessible. Check before you travel.