This route is near the route Green Crack and in fact shares perhaps the last 2-3 meters of climbing with it, but for most of the route is out-of-reach of the preceding line and fully independent.
To the left of Green Crack, a tree grows up into a right-facing corner with a huge wedged block down low. Worm your way around the tree at the base and up into the corner on the block, then proceed up the left-most right-facing corner, just right of Farniente. The top 3 meters merges with the route Green Crack at the top.
To retreat from the top, step a few meters right to a small but apparently solid tree with slings.
The left-most right-facing corner on the S.W. side of Green Thumb, just right of Farniente.
A set of cams to 3.5" or 4.0" if you like to sew it up.