Minecraft wiki entry for Defeating_the_ender_dragon, associated text: When you jump into the portal, you instantly get teleported to the End, giving no time to escape. When you arrive in the End, you spawn on a 5×5 obsidian platform. The platform usually generates on the surface of the island, so you can just walk off. If it generates underground, dig up to the surface using a pickaxe. If it is away from the island, throw an ender pearl to the island to save your extra blocks.