acid pit in the sewer?exploding acid!?

Ok, answering this thread three years later. The whole ending sequence was ridiculous. Why indeed would there be a boiling, exploding, flammable acid pit in an "abandoned" sewer system. Seems like quite a waste of public funds to maintain a boiling, flammable acid pit. No wonder California has such a budget crisis.

My other questions were: why would there be apparently miles of water-slide tubes to transport them to the acid pit? When they fell in the water initially, there was so much that it looked like a river. When they landed in the room where the acid pit was, the water was barely a trickle. Where did the water go? Then, at the very end, where did the police come from? The last 15 minutes seemed like a potpourri of props and cliches all thrown together in a failed attempt to get a few last scares and rack up some good clips for the trailer.

I remember being terrified of this movie when I was 16 years old. Now I really wonder why, because seeing it now it is so hackneyed it is almost unwatchable at times.

well if it was an abandoned old sewer, it would sort of make sense that it would be all full of weird chemicals and flammable methane and crap like that in it.

what I wanna know is how halfway through the guy rips a standard ceiling fan off the ceiling, somehow makes it start spinning around like a buzzsaw even though its no longer connected, and then uses it to block bullets...