That’s no moon ...
Two young nobles, enmity between their families. Where have we seen this before?
When a local farmer discovers something at the bottom of his new well, the fate of the land will hang in the balance.
This mountain chain was once vast and impenetrable, but had the misfortune to named in the binding spell of a mighty demonic(godly?) being, namely that when the Great Mountains are forgotten, then shall it be free.
The PC's end up in a strange world where the very rocks are made of gold and jewels.As such gold and jewels is worth very little, but the iron in their swords and belt buckles is suddenly worth a LOT.