Pitch 1 (100 feet, 5.9-) Climb up to the right of a small overhang (see photo). It's about 11 bolts to a two-bolt anchor on a small ledge. The crux is probably a steep section on the slab about two bolts below the anchors.
Pitch 2 (80 feet, 5.7) Climb straight up about 40 feet and you'll pass another two-bolt anchor, then the route divides into left, center, and right. I took the center route, and it goes another 40 feet to the top anchors. This top pitch is steep, but the rock has big holds and features, so it's much easier climbing than the first pitch. I think it's about 9 clips on the 2nd pitch to the anchors.
Descent: Rappel the route in two rappels.
I highly recommend Stewart Green's "Rock Climbing Colorado, 2nd edition" guidebook for a great description of the routes in the Tanner Dome area and throughout Colorado!
On Tanner Dome -- Amp Left is the 1st route in the scrub oaks, about 10 feet into the trees on the left. It is route number "4" in the Tanner Dome moderate routes photo.
Protection: 11 or 12 quickdraws. Bolts and anchors all looked great in Oct. 2011.
Amp Left is route #4.
BETA PHOTO: First two bolts on Amp Left, showing the route goe...
Brenda climbs Amp Left.
Ben Larson leading Amp Left.