Tony Hawk's Underground

In Hawaii, go to Wallows and get into walking mode. On the left side climb up the fence and jump to the balcony. Don't fall on the ground or else the dogs get you. When you get on the balcony walk to the end of it and jump onto the stone wall. Start walking on that and jump and grind the wooden fences until you see a mini-pipe in a big porch with a fence around it. Jump into there and then you'll get to skate in a mini-pipe.