I live in Grand Junction, the area north of us is all desert basically. There is miles of land that you can cruise around on a 4 wheeler, rock crawler, truck, whatever and do whatever on for free. You can use google earth to see what it is that I am talking about. The land goes from north of town to the bookcliffs and all the way to the Utah border. Then there is another area that is east of us which goes up to the mesa. Tons of land, tons of rodents of all kinds, open to shooting, and all free!
There isn't a good map of the place anywhere so I had to get this off of google earth. Anyway, to show size, the square plots of farm land that the red arrow is pointing at are 1/2 mile plots of land for scale. Almost everything in the yellow, is BLM land, you will see signs or fencing if it isn't. The upper yellow part keeps extending and getting bigger as it goes up. You just know how to shoot safely, no dumb shit of course like shooting into the air, or at the random roads that cut through the land and so forth. Come one, come all, shoot safely. In a weekend, you wouldn't even come close to seeing everything.