Partly Cloudy Star Trails at the Anza-Borrego Wind Caves.
This is a composite of 108 images stacked using StarStaX.
The Wind Caves are accessible from the northern end of Split Mountain. The trailhead is marked on Google maps. A high-clearance vehicle is a must as the road inside Split Mountain is littered with medium and large rocks. You should be OK with 2WD as long as you don't stray from the established path. My Titan has 4WD, but I didn't need to use it. Once you get to the trailhead - which is marked with a sign reading "Wind Caves", it's a moderate one mile hike up and over a hill to the caves.