How to Access the Ancient Forge, Collect the Mithral, ​​Kill Grym, and Forge Your Adamantium Weapon in Baldur's Gate III!

Reach Baldur's Gate 3 Ancient Forge and collect mithral ore and molds

To reach the forge, go to the left of the area of ​​rocks where Nere is locked up. Walk over the wooden planks above the lava and use a teleportation spell like Misty Step. Place yourself like the screenshot below and go unlock the waypoint to bring the rest of your group.

Collect mithral ore and molds Baldur's Gate 3

Pick up the mass mold then go to your right, kill the reanimated armor and get the scale armor mold. Go around to jump over the lava and reach the Mithral vein as well as a buried chest. Break the rock to get the mithral ore.

Forge the Adamantium Mace and kill Grym Baldur's Gate 3, Protector of the Forge

Come back near the waypoint to go to the adamantium forge, use a character with strength to open the mold compartment and insert the mold of your choice. Insert the ore and use the lever. Use the valve on the right to bring lava into the forge. Be careful, this will spawn Grym, a level 8 boss. To kill him, proceed as follows:

• as soon as he suffers a blow, he will move towards the character
• take advantage of it so that it arrives in the middle of the forge, and when it is above use the lever and do about 150 points of damage to it
• he must then return to the lava, then return to the middle of the forge (remember to activate the lava wheel if there is no more)
• hit him 3 times with the pillar to kill him

Collect your adamantium mace or armor and consider looting the boss to get the Grymcrane helmet.