89.5S, 95.8W - Burned Out Light House

Description
Two Advocate Spires, attached to an Empyrean Light House, near the northern border ridge of Singularity Caul. The spires look completely burned out. You can go up the lighthouse, and contrary to the Black Marrow Reliquary in the floating spires at other POIs on Caul, directly access the Black Marrow Reliquary present here.

Route

 * On the far north side of Singularity Caul.

Creatures

 * no steady spawn