The Mystery Spot in the Santa Cruz mountains is whack. I don't think anyone has any reasonable explanation as to why you can lean back and not fall over or as to why the trees grow at a slant without tipping over. During the tour we were told some of the possible reasons the gravity acts as it does and one of them had something to do with aliens, but I think that's too bogus. If you are ever around Santa Cruz, you MUST visit this place. Visit their website ( http://www.mysteryspot.com ) for some of the photos, they're crazy.