Road’s End Catacombs

Road’s End Catacombs is tucked into the cliffs of western Liurnia of the Lakes, southwest of the western Minor Erdtree. The route through it is hidden behind illusory walls, so hit the walls if the path seems to stop.

The boss is a Spiritcaller Snail, a little snail that hides while it summons spirit warriors to fight for it. Kill the spirits, find the snail, and you get the Glintstone Sorcerer Ashes.