Caves under basalt deltas in BW dimension.
That's not all.
Beautiful world is a major mod that expands the functionality of the game by adding a new dimension, ores, weapons and more. In the future you'll be treated to "magic", lore and I'll also try to create unique mobs that haven't been seen anywhere else.
Mini wiki:
How to create portal to the Beautiful world?
Step 1: Start by creating 10 blocks of fortified weeping obsidian (or 14, as you like). And arrange them according to the shape of the portal.
Step 2: After that, go to End, or Warped forest. And start killing Endermen. With a 5 percent chance you'll get the Amulet of Creation. Congratulations! You have received the most important item in the whole modification! Go to the Nether dimension, find the Warped forest or Crimson forest or Soul sand valley biome there. While in one of them and holding this amulet in your hand, right-click. Your amulet is now 25% charged with Nether's power. Then visit End again and find one of the biomes: End highlands or End midlands or [Small End islands]. And also with the amulet in your hand right-click. Your amulet is now 50% charged and you can activate the portal to BW
How is the infection treated?
How is the infection treated? Getting infected is not difficult, you just have to step on a virus block in an infected biome. But how do you get cured? For starters, just walk around the Beautiful world dimension, and one day you'll come across a tree: 
There will be big red blocks on it. These blocks are the new food, the pitahaya. Just break this red fruit, and you will get one pitahaya, which in turn will give you the effect of immunity from the infection, for a while.
Recipes:
I don't know English very well, so I used a translator to write this text.
The screenshots were taken along with: Stay True (resource pack) and Complementary Reimagined (shaders).
Datapack for creating a custom item to activate the TF Portal
Datapack for creating a custom item to activate the TF Portal
