Canterlot Mountains

The Canterlot Mountains refers to an otherwise unnamed mountain range that surrounds the city of. The mountains can be seen on the Map of Canterlot and throughout various shots in Equestria Girls: Legend of Everfree. On the map, it was revealed that Canterlot isn't just near a mountain range, but constructed in valley within the center of a range

The mountains existence was likely a reference to how Canterlot of the Pony world was built on top of a large mountain.