Heart of Lorkhan

The Heart of Lorkhan is the divine heart of Lorkhan himself - torn from his body by Auriel after the creation of Mundus and cast down into the world as punishment. It landed in what would become Vvardenfell and sank beneath what is now Red Mountain, where its immense power became the geological and metaphysical engine of the volcano.

The Tribunal - Vivec, Almalexia, and Sotha Sil - used the Heart to grant themselves divine power by touching it with special tools. Dagoth Ur also drew power from it. The Nerevarine used Keening and Sunder to destroy the Heart in 3E 427, ending its power and simultaneously stripping the Tribunal of their divinity and killing Dagoth Ur. Septimus Signus believed a Dwemer lockbox he sought contained the Heart; it actually held the Oghma Infinium.