Chamber of echoes

Uriel climbed down the hole in the ground with the help of the rope. Because of the rain, the narrow walls of the pit were slippery, but as an ascended he didn't have any issues going down until he eventually touched ground right next to where the flare they previously dropped had landed.

Although from above it seemed like an impossibly long fall, it was actually a short descent and there was a lot of spare rope at Uriel's feet.

"Amy! I Made it!" Uriel made a cone with his hands and shouted upwards but then he felt a hand pressing on his shoulder. It was the driver who was shaking his head.

"It's no use, she won't hear you."

The reason for this was unknown to them, but no sound or even light could escape from the pit. It was a supernatural phenomenon without any logical explanation, though Uriel theorized it could be related to an active structure similar to those he found in Chichén Itzá.