[Also, my original comment should have said "southeast" not "southwest", d'oh]
https://www.imdb.com/title/tt0770521/
They had a scene that was "outside Gainesville, FL". That's where I went to university and from the highway it's basically flat forests. The scene instead looked semi-arid with mountains in the background...
Ah, looks like my exact story is documented exactly on IMDB!
https://www.imdb.com/title/tt0770521/goofs?item=gf0809526
The show only lasted 6 episodes, so...
My bet is someone living in Moab wanted to do a desert art project and chose this location that was reasonably close, but still fairly remote.
People do all kinds of stuff out in the desert around Moab.
Just about 10-20 miles northwest of this monolith there's a small slacklining festival called GGBY held in a similarly remote location. Look up Fruit Bowl Highline Area on google maps and check out youtube to see some of the wild stuff people do!