During your time in the Underdark in Baldur's Gate 3, you will likely hear about a True Soul named Nere from a few different sources. Nere is not the nicest guy around, to say the least, and he's wanted by the Myconid Colony for crimes against their people as well as some of the Duergar for outstanding debts. Regardless of how you heard about Nere, your map will point you in the direction of the Grymforge in the Underdark, where Nere has been trapped via a cave-in.

The gnome slaves are working to get the True Soul out quickly, as there is poison gas in the room he's trapped in, and doesn't have much time left. If you manage to clear the cave-in without harming any of the gnomes, Nere will emerge and tempt you with an offer to join forces with him. However, you also might have an obligation to the Myconid Colony or others at the Grymforge to take his head. This guide will show both sides of the decision as well as how to free Nere in the first place.

Freeing Nere from the cave-in at the Grymforge

There are a few ways to go about clearing the rocks that are trapping Nere in the poison gas chamber. The primary way is to use a Runepowder or Smokepowder Satchel and blow up the rocks. You can receive Runepowder from Philomeen, who is located at the far north end of the Grymforge. You have to go around to the docks near the Grymforge waypoint, open the door near where two Duergar are dumping bodies into the water, and then make your way past Ooze enemies and up a steep path to reach Philomeen.