This could be old info but please note that the crag approach as in the "Roca Espana" 2012 guidebook by Loboedition.de is wrong.
You should park at Km 19, there is a layby there. Exactly opposite is the start of the path which initially is a shallow gully. Unless it has been cleared, the topo board is obscured by brambles so is not of much use and also is well short of the current access path
