Make Terrain Visable from distance

[dosgraphix]

Guys,

I have a mountain in my terrain which runs near my racetrack.

It is visable in Rfactor when i am close to the mountain, however i cannot see it when i am further away.

Does it have something to do with the LOD settings? What do they mean?

thanks

edit: Does anyone know what the setting should be to make it visible?