Map used in the beginning cutscene*
The actual map is split into chunks, and quite higher in detail.
Infact, these 23 (of 125) chunks have more vertices than the Cutscene map you've shown.
No hate, just wanna clear up some misinfo.
Someone actually deleted the big model (300k+ Verts) and found out that it's used in the cutscene at the beginning of the game.
The actual map seems to be straight up split into Chunks in \field\model\t1\t1_b, and the LOD is in \field\model\t1\t1_clod
This is 3 of those models.
I have succeeded in editing the chunks. Proving this theory of the "map being one model" to be false.
The LoD works weirdly, I'm not experienced enough in modding to know how it works.