Terrain visibility

So i have a quiet big terrain. In the 3D editor mode i can see the whole landscape, but when i change to game mode i cannot. Why?
Where could i change this?

Please provide some screen shots, not sure what you see and don’t see or what could be causing it.
Was your terrain generated by a program like WorldMachine or is it just a terrain patch created inside the terrain Editor?

Turned out the Skybox occluded the terrain. :rolleyes: Thank you anyways.