Lunar Forge

The Lunar Forge can be found in Silent Moons Camp, at the top of the hill and inside the round building.

Inside the building on the workbench is a book called Notes On The Lunar Forge which explains that weapons forged in the camp will gain the special enchantment of the forge in correlation with the phases of the moon upon forging a weapon. The forge's enchantment allows the weapon to burn it's target for extra damage while the moons are out.

It's important to note that the only way to acquire the forge's enchantment is to disenchant one of the Lunar weapons surrounding it in any Arcane Enchanter instead of forging a weapon with the moons out as the book describes.