Desertlands offers a new dimension you can travel to in minecraft that is entirely desert-based. You can get there by defeating a Husk and collecting a GoldOrb. Then make a portal out of sandstone in the same design as a nether portal. After that you use the orb to open the portal.
Once in the Desertlands you’re free to explore as you would normally and there are a few new sand blocks to collect as well.
You’ll also encounter some new biomes and creatures plus a few ruins along the way.
And it even has its own village and villagers!