Hello! My little brother is addicted to Tomb Raider but now he's stuck in a level called 'Antartica'. The problem is that there is a switch on the wall, in a small house, which should open a door. At least, that is what the walk-through says. But when he pushes the button, nothing happens! He searched through the whole level but can't find a key or something to open it with.

Please help us!