Take Greensprings Hwy (66) past Emigrant Lake 14.8 miles to Tyler Creek Road on the right. Follow Tyler Creek down a hill ~.25 miles, to pullout on right side. Trail will be on the left. Approach is short, but steep with loose gravel.
Great climbing on polished granite. There are a lot of sport routes out here. For a more complete guide check out Greg Orton's guide book for the Rogue - excellent resource for Southern Oregon climbers.
I don't mean to be rude or unkind, but the rock at Greensprings is neither granite nor glacially polished. Orton's guide describes it as columnar basalt. I would agree that it is extrusive, but not basalt. The rock is very light colored for basalt, closer to rhyolite.
And, I agree with Joshua's main point; that there are a few cracks at Greensprings that provide some of Ashland's best training for slippery Yosemite cracks.