Heading to the top of the spire, you see the remains of what once was a summit chamber, used to hold meeting in the distant past. Now it has collapsed in on itself, and the only thing of note are the crystalline formations that have grown from the ground here. You find five of these crystals, no doubt the "flint" you were told about. They come free with a modicum of effort and you return to the group.

As you head back down the mountain, the more scholarous of you determine that they were formed as a strange reaction to the AMF, and that they might be used to make magical weapons, though the exact details may change depending on who is smithing them. Eventually you pass out of the antimagic field, your powers returning to their normal strength. As you make your way towards the other side of the island, you begin to feel the incredible heat coming from the tunnel into the forges; you'll probably want some sort of protection from the heat if you want to press forward.

What's the plan?