This is one of my favorite spots to camp out in the west desert!  Marjum Canyon lies just north of Sawtooth Mountain and the enormous cliff of Notch Peak which rises out of the valley floor 2000' feet!  Within Marjum Canyon itself there are also numerous single and multi-pitch climbing routes There are a couple of small pull-offs of the main canyon road that leads to very primitive campsites and even a hobbit hole that was walled in by a hermit that lived in the area for 20 years!  There are no amenities here so bring all the water you need and haul out all of your trash.  There is also no cell service out here so bring a spare tire, let someone know where you're going, and have an emergency beacon just in case!