This is a custom world terrain which took the creator (Ekza) over two months to build and in it are most of the Minecraft biomes. Everything in the map has been handcrafted and as a result most of the terrain looks very natural. There are a few downsides and those are that it’s built in a flat world and that the ocean floor is limited to 2 blocks high.
You are allowed to use the world for building an adventure, creation, minigame or any other type of maps. The only thing he asks is that if you are making a video on the creation then please credit the creator (Ekza).
Creator: Ekza, Twitter Account