i think you just gotta be super fast or it shuts again. i remember on tomb raider 1, you had to press a button in the loft then pretty much launch yourself over the banister and leg it to get through the secret door in time. and yes, if you are playing tomb raider 3, there is a gate outside in some bushes (might be a maze can't remember) and there is a quad though there, with an entire race track/assault course thing. i only used to play tomb raider for the house parts, i loved locking the butler in the fridge and stuff. "lets do some tumbling" hell yeah!!!