What the heck do I put here

So I have this empty spot in my map and I don’t have the slightest clue what to fill it with, could a smart internet user pls save mii
image

I drew the arrow in so you can see what direction your supposed to go in case someone needs to know that

add some grass parts, dirt, rubble and some more terrain

kansas

i suck at doing funny detailing, how i do that

add kansas

Add trees idk

Boxes, Stones