Sacrarium

The Sacrarium is a small area in The Pale Heart, the destination added in Destiny 2: The Final Shape. It is linked to the Iconoclasm mission and can be reached once the Dyadic Prism has been obtained. Inside, a veiled statue is used to infuse the prism with Light, which produces Ergo Sum, an Exotic Sword from the Destined Heroes quest. The area is connected to The Maelstrom.