any one know what these are???

[Jeffrey S. Campbell]

we found these in a basement... the foundation was littered with them... I have referred the buyer to a pest inspection/treatment but i am curious... anyone?

[Rick McCullough]

Oh, I've seen them before, those are black stone crack dweller little insect crawler thingamajigys. Very much like termites except the eat stone cracks.

[Mike D. Hazelwood]

Do you have any clearer photos? It looks like sub termites working along the morter and I cant ID the black pellets I need a closer look.

[William E. Siegel]

Have no idea on the pellets (mice mabe), but it definetly looks like subterranean mud tubes.