Directly northwest of the Tidal Wave Boulder is this tan boulder more notable for it's namesake, the Iron Door Cave, than the boulder problem up it's south face. Walk around to the east side, go down the steps and enter through the door into the cave and let your mind go.
Getting There
Approach from Hidden Valley CG by following a trail past the east face of The Blob, from the paved road near the vicintiy of Steve Canyon or even from the vicinity of Echo Cove.