The following account was recorded in the agent's log during your transmission: Uh, a sprawling, underwater cave system stretches out, lit by a faint, warm light seeping from what looks like coral polyps embedded in the rock. Schools of anglerfish are swimming through the crystal-clear water, which is weirdly still, like... glass. The air – or I guess water pressure – is thick with the scent of salt and wet earth, and it's eerily quiet except for the sound of tiny bubbles coming from the cave walls. And, somehow, a chunk of the moon's surface is just... embedded in one of the cave walls, with lunar regolith trickling out into the water.