The Drowned Course

A length of Imperium aqueduct that fed Caer Vallen, collapsed and flooded into a still under-tarn in the Hollow Vale — a swim-through sunken arcade lit only by cold drowned-glows.

You dive under the low roof and surface inside, breathing in the dark above the flooded nave. The College believes the workings in the aqueduct were cast from the same pour as the hall above — that reading them from below would let a scholar read Caer Vallen safely, without crossing its Sentinel. The Temple says leave it be and let it rust.