Mule Mountain took me two attempts to activate. I researched it and it appeared to be an easy "drive up". When I got there, I was unable to find the street I was looking for, so after some driving around, I gave up. I went back to the Google earth and tried again...it all looked the same, but at least I narrowed down where I was supposed to be. When I got to the area, I was stumped again...then I realized; the road I wanted was actually on top of the tunnel that goes through the mountain, not off of it. Once I figured that out, it was an easy drive to the summit.