Minecraft Build a Portal to the Nether World Under the Rain In this immersive Minecraft gameplay video, we build a Nether Portal under a moody, rain-soaked sky in a peaceful plains biome. Surrounded ...

You can make a 10-block nether portal by placing cobblestone in all four corners.

Lava flowing into water creates cobblestone, and water flowing over lava creates obsidian. This basically means you can farm the supplies for a Nether portal or enchanting table.