Iceberg Lake is a location in the Land of Ooo. It was first seen in the episode "Business Time," where Finn and Jake freed and hired the Business Men to build their Gauntlet Dock for them. It is seen again in the episode "Mortal Folly," when Finn and Jake are chasing The Lich, but Ice King distracted the two from hitting him.
The lake is very large and has many icebergs. The icebergs can vary in sizes. Many of the icebergs have various items frozen inside of them.