The two cliffs you refer to are on Tenney Crags--Sentinel on the right and Specimen on the left. Both have routes and have been climbed. Specimen has a classic 5.10+ crack up the middle called Directissima. Long approach. Lots of good climbing. Some vegetation.
Thank you so much Stewart! I was wondering why I couldn't find reference to the walls here on the site. I will try to have some adventures up there soon and help fill out some of the site with route descriptions and photos to the best of my ability.