This is a cache at the Spiral Jetty. The road out here is a dirt road but any car can make the trip. You can make a day of this and stop at the Golden Spike visitor center then continue on and pick up a few caches. Travel time from Ogden area is about 1 1/2 hours. Bring a lunch and make a day of it. I would love to see pictures of your Group. Enjoy the vista's.
This is the desert so tread lightly and watch for critters, some can be dangerous. Bring plenty of water.