Local one is ghetto as hell. Bunch of sketchy kids hang out there and yell/spit at kids who actually ride the stuff.
I've found heroin needles and other shit around there and kids like to burn stuff they find in the mini-ramp.
The park itself isn't great either, but some BMXers usually find a way to slay it.
I don't often go there and it's worth skating street in Boston or driving to a good park.
Pic of Waltham skate park:
(This is the nicest pic I could find)