having issues with my new map

[Richey15]

i am new to teh whole 3d everything and did my shot aat low poly. i created some cool assets in blender and made these mountains

but when i put them into unity i get this glitch where i can only see parts of it (), and i can only see the full thing when under the map (). i am unable to find a solution for this but i was pressing buttons and it stopped glitching, but this result did not work a second time, thanks for all the help! (and sorry if this is the wrong thread

[theANMATOR2b]

I don’t use blender - however this is caused by the normal direction of the polygons facing the wrong direction.
Just google “flip polygon normals in blender” and you’ll find the solution you need.

[Richey15]