Valeria, it's not long after you've gone around the bend that you find, rather than a door, a room. It describes part of a circle, a few steps across, though it doesn't rise higher than the corridor you're in now. Along the walls further in, there are two closed doors, one opposite the other. And in the middle of the room, on a low plinth, sits a large chest, white, as if carved out of marble or ivory, but apparently painted also a vibrant blue.