Pine Rock
Ontario, CA
This small, obscure area contains a few short routes in and around a gully. Since the gully faces southeast, the area tends to be damp, though it is cooler than the rest of The Swamp in the summer. Due to a lack of traffic, the routes tend to be dirty and have vegetation growing out of the cracks in the summer. Bring a big non-metal brush and prepare to do some cleanup work. Due to a lack of information, route names were created.