How many pieces does The Mountain Cave have?

Set 21137-1 contains 2,863 pieces across 355 unique parts, mostly in grey and brown tones.

Which minifigures come with the set?

The set includes six minifigures, among them classic Minecraft mobs such as skeletons.

Does it combine with other Minecraft sets?

Yes, LEGO® Minecraft sets share a similar blocky building technique, so landscapes and buildings from different sets combine well.

Minecraft

The Mountain Cave

The Mountain Cave recreates a classic Minecraft cave biome in 2,863 pieces, complete with a waterfall and several levels running through the mountain. Six minifigures, including mobs such as skeletons, populate the scene. At 355 unique parts, the model stays relatively simple to build despite its overall size.

Set number: 21137
Year: 2017
Pieces: 2,863
Minifigures: 6
Theme: Minecraft
Different parts: 355

What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 355

As BrickLink list (XML)

Import on BrickLink: Wanted → Upload, upload the file (or paste its content), pick a Wanted List and add the parts.

Spare parts (38)

These extra parts come with the set in case one gets lost.

Minifigures 6

Enderman, Green Box fig-00650414 pieces × 1
Charged Creeper fig-0065126 pieces × 1
Skeleton, Square Skull, Pearl Gold Armor fig-0065137 pieces × 1
Alex with Medium Azure Helmet and Armor fig-0065145 pieces × 1
Zombie with Gold Helmet and Legs fig-0065154 pieces × 1
Steve in Flat Silver Helmet, Armor and Legs fig-0065165 pieces × 1

Description

Building Minecraft's blocky look in real bricks

The mountain is built from stacked, deliberately offset elements that suggest a rock face without shaping every individual block, translating Minecraft's pixelated terrain into physical bricks. Light Bluish Gray, Dark Bluish Gray and Reddish Brown make up the stone and soil layers, with black used mainly inside the cave passages. With only 355 unique parts across 2,863 pieces, many basic shapes repeat throughout, which is typical for terrain-heavy sets where volume rather than variety drives the build. Thanks to the irregular arrangement of blocks, the mountain reads as organic terrain rather than an obvious repeating brick pattern, despite the limited number of shapes involved.

Passages, chambers and a waterfall

Several passages and chambers run through the interior of the mountain, and a waterfall running from the peak down to the base gives the model a clear focal point. That layout means the set rewards being explored from multiple angles rather than viewed only from the front. Checking the parts list on this page shows exactly which colours were used for the rock, soil and water sections. Several small ledges and recesses throughout the rock also give space for hiding extra scenes or characters within the terrain itself.

Six minifigures, including hostile mobs

The six minifigures mix player characters with classic Minecraft mobs such as skeletons, recreating a familiar in-game situation inside the cave. That makes The Mountain Cave appealing to players who know the game and want to act out scenes from it rather than build purely for display. The separate chambers inside the mountain give those scenes several small settings instead of one open area. Beyond the mobs, the mix of tight passages and open chambers keeps exploring the cave varied rather than repetitive.

Where it sits in the Minecraft range

At 2,863 pieces, this set falls in the upper-middle range of LEGO® Minecraft sets, suited to builders who already have some experience rather than complete beginners. Since the blocky building technique stays consistent across the range, it combines well with other Minecraft landscape or building sets if you are putting together a larger Minecraft display.

FAQ

How many pieces does The Mountain Cave have?: Set 21137-1 contains 2,863 pieces across 355 unique parts, mostly in grey and brown tones.
Which minifigures come with the set?: The set includes six minifigures, among them classic Minecraft mobs such as skeletons.
Does it combine with other Minecraft sets?: Yes, LEGO® Minecraft sets share a similar blocky building technique, so landscapes and buildings from different sets combine well.