Moonstone is a dark blue rock that seems to glow in the moonlight. It resides in deep in a cave and is the place where leaders receive their nine lives.
Moonstone is considered sacred to CaveClan, FogClan, RoseClan, and MossClan. Medicine cats and leaders often travel here to seek advice from StarClan. It is a short walk away from where the four clans host a "Gathering" every full moon.
- It shares the same name as a location in the Warriors series.