Infinity Mountain

From Thread 1

The central point of File Island, few Digimon live on it. It is one of the largest and tallest mountains in D-World Gamma. Its peak is well above the cloud line and is constantly covered in snow.

In the anime, Digimon Adventure, Devilmon takes residence on the mountain top after he finds the Black Gears within it. The first visit marked Gomamon's first evolution into Ikkakumon. The second visit, when the Chosen Children fight Devimon, marked Angemon's first appearance and Devimon's defeat. The mountain is also home to a Unimon that assists the Chosen Children in the fight against the Dark Masters.

In the video game, Digimon World, Infinity Mountain is labeled Mt. Infinity. There are four bosses in Mt. Infinity: Devimon, Megadramon, Metal Greymon, and Machinedramon.