A hellish dimension where numerous materials can be found.
2023 October 9, Zackerie Fairfax, “How to get Netherite in Minecraft – crafting guide and tips”, in Dexerto[1]:
Not only did developers completely overhaul the Nether in Minecraft 1.16, but they also added Ancient Debris, a source of Netherite buried deep underneath the netherack[sic] floor.
