Nether Portals are essential in Minecraft for traveling between the Nether and the Overworld. Players need a minimum of 10 Obsidian blocks and Flint and Steel to construct and ignite the portal.
You can only use a Diamond or Netherite pickaxe to mine Obsidian. Flint and Steel: This tool is used to ignite the portal. It can be crafted by combining one iron ingot and one piece of flint.
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To do it, Enter the Nether through the Nether Portal- made of 10+ Obsidian blocks. Start mining at Y-level 15. It is where the Ancient Debris spawns frequently. Use the Diamond Pickaxe to mine it.