You have to enter the llama temple on the third island in geyser plains.
I beat the game beat the last boss did all forges except warriors shield how do I get in the gate to the forge of nymphs?
I dont know either... IT IS SOUTH OF THE FORGE OF NYMPHS AT THE VERY BOTTOM LEFT CORNER OF THE ISLAND
the forge is in the llama temple on the third island, you have to repair it.
You go to the Forge of the Nymphs and go down one section to the bottom LEFT corner and the blue rock thing on the glowing green podium thing is the Sorcerer' s Sapphire.
The hidden forge is inside the llama temple on volcano island, the 3rd island
click the tree you want to forage off of and select forage
you need to repair the forge in the temple interior
the forge at the temple allows you to build all the things that need to be built with metal. metal axes, hammers, etc.
you just walk up to it and an option will appear that says repair forge and u just clik x and hell repair it
you should unlock it first and make it at the forge or workbench
In Castaway 2, you can find the key for Mnemosyne's forge by defeating the boss monster known as the "Manticore." After you defeat it, you will receive the key as a reward. Make sure to explore the area thoroughly to ensure you collect any additional items you may need for crafting or upgrades.
If you have got to the 3rd island, and into the llama temple then, go to the main area of the temple and fix the forge once you have you use the forge to craft metal tools. Such as the axe. So, in other words it is just like a crafting bench but it only allows you to make the metal tools.