Unidentified small dark insect or spider

Appears to be on a rough, lichen-covered surface; its natural habitat cannot be identified from the image.

Unknown; the image does not show diagnostic features needed to identify it.

The subject is too indistinct to determine whether it is an insect or spider, or to describe its behavior.

Cannot be assessed without identification. A clearer close-up with visible legs and body shape, plus a size reference, would help.