Geargejaure, also called Trollsjön and sometimes Kärkevaggepadajaure, (Northern Sami: Geargejávri) is a lake in the Kärkevagge valley in Kiruna Municipality, Sweden.

[1][3] It is the clearest and purest lake in Sweden and has a visual depth of 34 m, right down to the bottom.

[1] It is composed of meltwater from the surrounding glaciers.

The lake is ice-covered well into the summer and is only ice-free for three months.

This article about a location in Norrbotten County, Sweden is a stub.