LOD Culling Problem

Unity Engine
1

Have a large rock prefab that is not working correctly. All the other prefabs with LOD seem to be working fine. Its just this one Rock. The rock is visibly not there until you get really close to it then it just shows up all of the sudden. See below for screen shots of the rock.

In image culling4 its a really big rock and a bunch of it is below the ground.

Any ideas how to fix it?

1745263--110246--culling1.jpg
1745263--110246--culling1.jpg1245×537 164 KB

1745263--110247--culling2.jpg
1745263--110247--culling2.jpg1241×541 130 KB

1745263--110248--culling3.jpg
1745263--110248--culling3.jpg1246×541 141 KB

1745263--110249--culling4.jpg
1745263--110249--culling4.jpg1166×582 169 KB

2

Figured out what it was.

It was acutely the original model. I had to take the original model and add it to a scene. Then I took the material and readded it to the model. Then created a new LOD. I don’t think it acutely had anything to do with the LOD. It was the model it self was some how messed up.