About 60 ft uphill from P1 of The Red Dihedral, Mighty Mouse is the right of two bolted face routes, and starts behind a large pine tree. My notes indicate three cruxes. The line heads largely straight up via some fun 5.11 moves on edgy rock. Jog right after 30 ft or so to get a left hand clip, and then start the very fingery traverse to the left and the 5.12 crux. It seemed like we were on the fingers for a long time, and I thought that there was another tough 5.11c scale move before the line straightens out and runs for the anchors. The rock is blackish here, a bit rounded, with good friction, albeit a bit run out. Good continuous climbing, difficult sequences, and great stone give it three stars in my book.