Fig. 1Sunbeam on the floor of Upper Antelope
Landform
A narrow slot canyon carved through Navajo sandstone by flash floods. Flowing walls, rippled grain, and mid-day light shafts.
Field note
Upper Antelope is a walking-width slot. Midday sun drops through the ceiling as visible beams. The walls are cross-bedded dune sandstone, polished into folds.
