Astrariums on the Coast

Astrariums on the Coast is a collection side quest in Dragon Age: Inquisition.

Acquisition
Interact with any of the Astrariums in Storm Coast.

Walkthrough
Reach and solve the 3 Astrariums in the Hinterlands:
 * Servani in Great Cove
 * Fervenial in Morrin's Outlook
 * Bellitanus in Apostate's Landing

When all 3 Astrariums in the Storm Coast are completed, the location of a cave will be revealed, south of the south-most Astrarium. It contains two chests: one with unique bow Bane of Red Crossing and another one with a rare weapon.