The Dark Angel petroglyph panels...

occupy the eastern wall of a sunken graben valley, below and to the west of the sandstone monolith that shares the same name, in the northern part of Arches National Park. This series of about a dozen panels almost certainly depicts hunting scenes involving bighorn sheep and deer in the Salt Valley, spanning both Archaic and Basketmaker cultures.

The top of the Dark Angel spire on the left, with the graben valley framing the distant snow-draped La Sal Mountains on the right.

Small petroglyph showing a human with atlatl aimed at a sheep.

The Dark Angel, my hiking companions and the requisite sun flare. This spire is about 150 feet (46 meters) tall.

View south across Devils Garden and the high La Sal Mountains. Look closely and one can spy Round Mountain in Castle Valley near the center of the image.

Lithic fragments of chert found in the graben show clearly worked edges and must have been carried into the valley.