Also! You can see the ruts from satellite view on Google Maps
Pretty cool! Little bit of a hike up the hill, so it's not a super quick stop. The ground is silt, so beware of even the slightest bit of moisture on the ground. I echo others -- only drive if you have 4wd. It's located way down on the highway. If you zoom in on your map to where it says "Megeath," it's basically there. That gives you an idea of how far down it is.
DO NOT STOP HERE. Owners are incredibly rude -- the woman walked away from me mid-sentence at one point. I pulled in late off the highway after getting stuck on my route. I saw the sign on the highway and as a single woman traveling alone, thought it looked like a safe place to stay for cheap. I arrived after the office was closed and followed the directions for a late check in, just like I had at the KOA the night before. Set up my tent in an allotted area. In the morning was scolded while I was trying to pay that "we don't accept tents after dark" (it was not yet sunset when I had arrived) and that it "wasn't her fault" that policy wasn't posted anywhere. She continued to lecture me until the transaction was complete and I walked out the door. I'm still taken aback by the interaction.