Krematoa

Krematoa (also known as the Lost World) is a large, hidden area in the game Donkey Kong Country 3: Dixie Kong's Double Trouble!.

Set inside a mountain or possibly dormant volcano, much of Krematoa's terrain consists of cliffs and caverns. However, Krematoa's overall climate is fairly warm, as a forest and a jungle can both be found at different ends of the area. There is also a lake in the center of the island, though there is nothing of interest there until the Kongs explore the rest of the island first.

At first, Krematoa was just a legend, believed to exist only by Blunder. However, as the Kong progress through the game, Blunder slowly leaks clues as to how they might be able to find it. Krematoa indeed does exist, as it had once stood to the east of Mekanos, but at some point it had sunken to the bottom of a lake. All that was left of the island were four rocks, each pointing in a compass direction.

Once the Kongs got their hands on the Turbo Ski, they were able to raise Krematoa by driving circles around the four rocks. Once it had risen, the Kongs ventured inside, only to discover that Boomer had already found his way inside and set up a bomb shelter near the entrance. Because large boulders blocked the Kongs' path, Boomer offered to blow them up in exchange for Bonus Coins. As Boomer blew up more and more boulders, the Kongs were able to venture deeper into Krematoa.

Each completed level of Krematoa yields a gear cog which, when used along with the other cogs obtained from the other world levels, starts a machine in Boomer's shack that seems to 'summon' the Knautilus, Baron K. Roolenstein's massive submarine, from deep within the central lake, granting the Kongs access to the final boss fight.

In the Game Boy Advance remake of Donkey Kong Country 3, the water of the lake turns to red-hot lava when the final boss rises.

Krematoa is the only area in Donkey Kong Country 3 where Kuff 'n' Klouts can be found, appearing in the first three levels.

Trivia

 * Krematoa's name is a pun of the volcanic island Krakatoa.