Our TW's just don't have the power to make it up those steep sandy hills do they. I get up some with the 55T rear sprocket on that I wouldn't make with the stock sprocket, but it still has it's limitations. When I rode with my wife in the Owyhee Mtns. near Toy Pass, I ran into such a steep hill that was loose gravel instead of sand, and I couldn't make it. Even the ATV wife was riding barely made it, even in 4wd.
Very pretty area you have to ride around. Lots of exploring I'm sure. Thanks for sharing.