Minecraft wiki entry for Badlands, associated text: The colors of specific terracotta strata (bands, layers) in these biomes are the same throughout all badlands biomes for any particular world. This means, for example, a layer of white terracotta might generate between the lines (X=200, Y=71) and (X=400, Y=72), being the same for all changes in Z. One may note chunk patterns when strata jump one Y-level at a particular X value. Often, the topmost layer of stained terracotta is replaced by regular terracotta, most often on plateau tops. Additionally, the topmost layer of terracotta below Y level 63 is always orange in color.