The cliff is hard to find. It is in the sun for the am. The area is very secluded. The rock is granite, but very dirty (going to clean it next summer). Still able to climb it, though.
Look up Cataract Lake on Google. Basically go north through Silverthorne on CO Hwy 9 and take a left on Heeney Rd. Follow Heeney Rd until you hit Cataract Rd and take another left. Follow Cataract Rd to the top, park the car and walk to the lake. Once you reach the lake, you can walk around the left side until you reach the inlet from the upper lake (1.5mi). Follow the creek/ trail up to the noticeable cliffs that are on the left side of the creek (around 1 mile uphill).
Mountain Project's determination of some of the classic, most popular, highest rated routes for Cataract Lake (Heeney, Colorado):