The Sierras get all the love, and for good reason. But across the valley to the east are the White Mountains. Not the popular White Mountains of New Hampshire, but rather a high elevation ridgeline straddling the California / Nevada border. The highest, roadless section spans from White Mountain (a 14er) and Boundary Peak (the Nevada highpoint). Along the ridge you cross huge open plateaus and some fun narrow scrambles. While few humans travel this area, you can expect to see elk and desert bighorn.
The route is easy to figure out with topographic maps, so I removed my marked up mapset and would like to pass off the fun to you to look up the USGS maps. Caltopo (for online use and creation of paper maps) and Gaia GPS (for a mobile app GPS) are good places to look for planning and navigating (and maps).