Use [item=157771] to cleans altars inside the Forgotten Cove caves.
Dark Grotto is south of The Lost Estate near the shore.
Bleak Sepulcher is in the building to the east near the road.
Moldering Foyer is north-east of the The Lost Estate near the shore.
Crumbling Chambers is east of The Lost Estate on the other side of the island.
The Profaned Reliquary is north near the cliff.
/way Stormsong Valley 80.50 57.04 Dank Grotto
/way Stormsong Valley 83.61 53.93 Bleak Sepulcher
/way Stormsong Valley 81.64 50.29 Moldering Foyer
/way Stormsong Valley 82.08 44.74 The Profaned Reliquary
/way Stormsong Valley 86.58 51.98 Crumbling Chambers
Indefatigable Purpose quest video: https://www.youtube.com/watch?v=F-NnuoWJWcY
This quest is a part of Forgotten Cove sidequests in Stormsong Valley.
ID
Quest
Sidequest Chain
Questgiver
Zone
Video
109
Forgotten Cove
Brennadam
https://youtu.be/W5GMxJxFdLk
110
Forgotten Cove
[npc=133640]
The Lost Estate
https://youtu.be/IDokANmBOxI
111
Forgotten Cove
[npc=133640]
The Lost Estate
https://youtu.be/HQNF4l74S3w
112
Forgotten Cove
[npc=133640]
The Lost Estate
https://youtu.be/AeZbnCVfEQ8
113
Forgotten Cove
[npc=133640]
The Lost Estate
https://youtu.be/ccdnxcP5yTc
114
Forgotten Cove
[npc=133640]
The Lost Estate
https://youtu.be/Z26LANcipXo
115<
Forgotten Cove
[npc=133640]
The Lost Estate
https://youtu.be/F-NnuoWJWcY
116
Forgotten Cove
[npc=133640]
The Lost Estate
https://youtu.be/b0w5WiM4gqU
117
Forgotten Cove
[npc=133640]
The Lost Estate
https://youtu.be/kI69bOpr2MU
Id column is approximate quest № In Stormsong Valley storyline (Stormsong and Dance <= for more info)
This area is kinda bugged right now, so if you can't get the quest kill yourself and res.