Don't dig too deep! The Abyss is a biome found in the Tutorial World if you fall off the edge, but it is also found in the Cursed Skylands when you fall off the edge, or if you dig too deep in any other realm. falling into this biome instantly kills you, and even the flask Death - Defying Vial will not work. In the Cursed Skylands, random Updrafts will appear so you can fly out.