Parowan Gap

A wind gap (a pass formerly occupied by a thru-going stream) in south-central Utah, at the edge of the Great Basin. The inset shows the approach to the gap from the west. It was a route both for emigrants and Native Americans, the latter's passage marked by a large number of petroglyphs:
www.ipernity.com/doc/289859/39696718/in/album/824038
It's still on a paved county road, so it remains a thoroughfare even if no longer the major route.