Rescuing the druid Halsin is one of the many tasks in Baldur's Gate 3. When you complete this task and return Halsin to the druids, everyone there will respect and praise you, especially Rath. Because of the great respect and affection, Rath will give you the Rune of the Wolf as a gift. This Rune of the Wolf will help you find the treasure cache and solve the Enclave Library Puzzle in Baldur's Gate 3.

There are numerous monuments in the Druid chambers. Each of these monuments is connected to one of the four animals, namely elk, bear, eagle and wolf.

All major monuments like the Rune of the Wolf itself have the treasure cache underneath. You need to enter the Wolf cache to solve this Enclave Library Puzzle in Baldur's Gate 3 and get the gear inside as a reward.

First, you need to go to the Enclave Library and find the Wolf Monument to solve the puzzle. There will be four pillars around you, one of which has an empty socket. Find the one with an empty socket and place the Rune of the Wolf in it.