Minecraft wiki entry for Ancient_Debris, associated text: Ancient debris is one of the most valuable resources in Minecraft, due to it being a source of netherite scraps and thus netherite ingots. It is found in Nether most commonly at Y=15, although mining at lower levels is safer due to lower risk of mining into a lava ocean. While strip mining is still a potential and straightforward way of mining for ancient debris, using explosives is a lucrative possibility due to its high blast resistance. Furthermore, beds are commonly used, as they explode when used in Nether and are cheaper than other explosives. It is also possible to use Ghasts or the Wither to mine, however the player should be careful to not die by their explosions and not to break Ancient Debris with blue wither skulls.