That pic was from Catty Woods, a set of trails in northern Pennsylvania. They do some amazing things there, with jumps so tall they had to build scaffoldings to make the lip.
SplitZX, is that over by the recycling place on the west side, kind of behind an old softball field? If so, we've built jumps there before and they got destroyed by 4-wheelers. *nevermind, I just clicked the link. I'm interested in checking this place out now.
and they make neat drainage systems with pvc piping.