The first room he will find is through a door with a set of seven large keyholes down the side. He will manage to wriggle through the largest one, which is the sixth.

He finds himself in a room so dark and large that it may not even have walls at all, the black abyss extending out into infinity. The only spot of light ahead is a kiddie sized pool of water. The water is impossibly aqua in hue, and glimmers vibrantly with an inner light. It ripples, despite there being no wind.

Behind him, he can see the light of the keyhole, but only just.