Ancient Debris is a new addition to Minecraft that allows you to obtain Netherite! We're taking a look at exactly what you need to do to find it, because this new resource will allow you to upgrade your gear to the highest current level available.
Ancient Debris is to be added officially to the game in the 1.16 patch. It is not technically available in the current version of the game, but it can be found in the 20w06a Snapshot that you can play if you have the Java client installed. These Snapshots provide Mojang a way to test how things work, so some of the stuff listed on this post is subject to change. We'll be updating the information periodically as additional updates are added to the game.
How to Find Ancient Debris
Ancient Debris can only currently be found in the Nether, so you will need to create a Nether Portal and be prepared to fight off quite a bit of the evil that dwells in this area.
Once you've reached the Nether, you will need to head to the lower levels of it like you would for Diamond. Ancient Debris should start spawning at Y (floor) 11. You can check for your current level you are on by pressing F3 on your keyboard and looking for the XYZ listing. Once you've reached that level, you can start strip mining and hope to run into some. It's pretty rare, so expect spawn rates to be similar to Diamond. It spawns in smaller mineral veins than Diamond, you will only find 1-3 per pocket. If you don't want to mine, you have another option available to you: TNT. Ancient Debris is blast resistant, so you can blow up large areas and hope to run into it. This is going to likely be the easiest way to obtaining a lot of this stuff in the shortest amount of time.
I have found that you can place a TNT with a four block gap between them and have them trigger each other without dropping. This will create a nice chain-reaction of explosions that will clear out a large area which will hopefully help you find Ancient Debris. Another nice thing about Ancient Debris is you don't have to worry about it being destroyed by lava because it floats in it!
You'll recognize Ancient Debris by it's brownish color and spiral like design on top. You can ONLY mine it with a Diamond or Netherite Pickaxe, if you try and use something else you will get nothing. That's all you really need to know about Ancient Debris and how to find it! If you've looked for Diamond in the past, you will really not be a stranger to this type of thing. However, hunting down this resource might be a bit more on the dangerous side!
Now that you've got some Ancient Debris, be sure to check out how to craft Netherite Armor, Weapons, and Tools!