Minecraft wiki entry for Up_to_Infdev_20100325, associated text: In the February 27th build of Infdev, all generation past 33,554,432 blocks would be solid stone, continuing out to the 32-bit limit. This wall extends vertically from the bottom of the world to the height limit, and are the first truly visible appearance of the Far Lands, although very visually, behaviourally and positionally distinct from convention.