There are a lot of film clips used in the folk horror documentary, Woodlands Dark And Days Bewitched: A History Of Folk Horror, and as far as I can tell, not all them are identified for the viewer.
Toward the end of the documentary, a few minutes into the sixth and final segment, "Folk Horror Revival," there were two such unidentified clips back-to-back that caught my eye.
I took photos of both from the TV screen. This one shows a grey-skinned, clawed hand emerging from a tree root:
Does anyone know what film this clip is taken from?