There's like 20 15-foot long concrete slabs that just randomly showed up and was deserted one day by some company. Anyways they're seperated about a foot and a half apart, and me and my friends set up a few ramps and rails on them. They're smooth, but have these weird hook-like things (they won't poke you, even if you tried) randomly on each one but they never get in our way. There's a pile of cinder blocks, metal rails, plywood, just about anything aroudn the end of the line you can use for ramps and stuff.
