A 4K by 4K Minecraft Map, 4K x 4K blocks. It has 5 distinct areas, a complex and semi-realistic river dividing them. It has custom cave systems to explore. The regions are Rocky Tundra, Mountain Forest, River Plains, Mesa Cliffs and Sandy Desert. Arguably there are multiple sub-regions but those are the major ones.



More images:
https://imgur.com/a/PEgN8Jc

Map Size	4096 x 4096
Unique Biomes	5
Unique Custom Cave Types	3
Survival Compatibility	90%
Minecraft Version	1.19+

Disclaimer:

Some of the trees may contain blocks that are not perfectly survival-compatible (such as fences, stairs and stripped logs), but they should all be removable with an axe, as opposed to some maps that contain trees with soulsand, noteblocks, wool and clay and the likes.

Also, I'm naming it survival-compatible rather than survival-friendly because it does not, at this time, contain a stronghold or some other essentials needed for a full survival experience.
However, it DOES continue into a normal survival world with a transition players can navigate.