Moonstone Hill
Moonstones in RPG is a trope. Moonstone Hills from northern Allansia in the wonderful Fighting Fantasy Gamebooks. The 90s videogame Moonstone on Amiga. The 2010s tabletop RPG game Moonstone.
Moonstones are a type of gemstone.
In my games moonstone is used by werewolves to help the tame their inner beast. Wearing of moonstone pendants as a tribal heirloom within a werewolf pack.
Moonstone Hill is a rise in a forest mountain region where a huge moonstone attracts werewolves to hang out there.
One day while walking my dog I discovered a small piece of stone with a fossilised crystalized shell inside of it, the shape of a crescent moon.
That’s the standing stone to use in the terrain for Moonstone Hill!!!