I took a total of six trips to the Silver State OHV Trail System in the last year, exploring the more than 600 miles worth of trails. This is reported to be the first congressionally designated OHV trail system in the nation.
Here is a link to their web page:
The Dirt: Silver State Trail System | OFF-ROAD Nevada (nv.gov)
If you enjoy wide open spaces, this trail system has plenty to offer. Scenery is typical high desert, with elevations ranging from 4000 to 7000 ft. I spent six full days exploring the trail system, and covered over 600 miles, without seeing another person. I used three separate machines to do the exploring, a Polaris RS1, a Can Am Maverick X3 XRS, and a Jeep Rubicon. The east side of the loop can be reached from Pioche, Panaca, and Caliente, NV. The west side of the loop is quite isolated. Carry extra fuel and water with you. Here are some pictures from my trips.