Minecraft wiki entry for Brick_pyramid, associated text: Brick pyramids were completely solid; they had no interior rooms. A strange quality about these pyramids is that they spawned right on top of the terrain instead of being a complete pyramid with the bottom underground (like with desert pyramids); their bottom face would conform to the terrain rather than being flat. The pyramid would generate its top block at the top elevation of the map, and would expand down from there, with each consecutive layer containing the next odd square number of brick blocks. Since the height limit at the time was 64 and sea level and typical ground level was 32,[needs in-game testing] the base of a pyramid was typically 63 × 63 blocks and the pyramid itself was 32 blocks high. Whenever it spawned on top of a large body of water, it would usually add to the number of bases.