They came at some length to a chamber, sealed by a massive ironbound door, which William unlocked with a key big enough to double as a bludgeon should the Bank come under attack. It was large for a subterranean vault, small for a parish church. Like a church, it had an aisle up the center, which had been made useful as a gutter. A trickle of groundwater two fingers wide meandered through crevices between close-set paving-stones. To either side of the aisle was a raised platform, also paved. Crates, lock-boxes, and money-bags had been piled up on these. William Ham led them up to the far end of the room, where the platforms gave way to a clear open space, and the trickle of aisle-water disappeared into a hole in the floor. He identified an open space at the end of a platform, and by a gesture indicated that Saturn should set the chest down there. Saturn did; but Solomon did not witness it, as he was inspecting the room.