This is great news. For years I've been pushing the Sheldon National Wildlife Refuge as one of, if not the, darkest area in the U.S. Massacre Rim is adjacent to it to the west. Better yet, I've been planning on spending a week there this autumn! A few notes:
Road 8A is the only decent road in the area; it's gravel, graded, and maintained. However, it you go over the cattle guards at 50 mph you will be launched... Other roads are not to be trusted unless you have 4x4, a winch, and extra water (especially) and food to sit out being stuck in the mud, possibly for days after of big storm.
You can also have an adventure by approaching Massacre Rim by driving down through the refuge starting at the Virgin Valley Campground, off Route 140 (Just as dark as Massacre Rim). Ask about road conditions at the Visitor Center. Again, carry extra supplies: this is wild, remote country, a long way from gas or food, and you are on your own.
It has the densest population of rattlesnakes I've ever seen. Beware.
No campgrounds that I know of at Massacre Rim, but lots of them in the refuge.
Edited by mountain monk, 31 March 2019 - 03:56 PM.