But, my dad and I are going to Vegas in a week and want to spend a couple days hiking/mtn. biking. My question is where is the best place to do that? Keep in mind, my dad has degenerating and herniated discs in his back so he can't do any hardcore downhill or jumps/falls. But, he is strong and can handle rough terrain.
I have always wanted to go to Joshua Tree, is it worth our trip from Vegas?
+K for input