The Elder Scrolls: Tamriel

Beneath Cambray Hills lies the Echoing Chasm, a winding network of limestone tunnels that emit strange, harmonic sounds with the wind—almost like voices singing in chorus. Once mined for welkynd shards in the Merethic Era, it was sealed after the miners awakened a slumbering entity known only as "the Sleeper Below." Few who descend now return, and those who do speak in riddles, their eyes glazed and their voices carrying the same eerie cadence as the cavern winds.