Cave

The Cave is the fourth world of Donkey Kong Country Returns and Donkey Kong Country Returns 3D. As the name suggests, the levels take place in the caverns. Excluding the secret level, Jagged Jewels, every level in this world either involves the Kongs riding in Mine Carts or Rocket Barrels. In both level types, the main enemies are Mole Miners and Mole Guards, who often change the Kongs' surroundings and attack them often. The world's boss is a mole named Mole Miner Max, who attacks from his Mole Train. This area can be considered as a tribute to Monkey Mines from Donkey Kong Country.

Extras
The following is extra content that can be unlocked in the Cave. The unlockables can be seen in their respective galleries after selecting the "EXTRAS" option in a file's menu. For a full list of extras in the game, see here.

Images
Images are unlocked by collecting all Puzzle Pieces in certain levels. All images that can be unlocked in the Cave are listed below, along with their titles and the levels wherein they can be unlocked (mentioned in parentheses).

Music
A soundtrack selection for this world can be unlocked after beating Mole Miner Max.
 * "Mine Cart Cruise" – plays in Grip 'n' Trip. It is an arrangement of "Mine Cart Madness" from Donkey Kong Country.
 * "Mine Menace" – plays in Crowded Cavern; also plays in Peaceful Pier earlier in the game, and Gear Getaway later.
 * "Rickety Rails" – plays in Rickety Rails and Bombs Away; also plays in the Cloud level, Mischievous Moles.

Names in other languages
Höhle (Donkey Kong Country Returns)