Invisible ground

[Mr.Lee]

Hi al,

I've started on my first map.
it includes many mountains and rocky surfaces.
But for some reason some parts of the mountain become invisible, but when i zoom in its gone.

Here are two screens of my problem showing.
http://www.humster.nl/public/screen049.jpg
http://www.humster.nl/public/screen050.jpg

I hope you guys can help me out.

[ELI]

Does it look that way when testing it in game? Looks like you're using soldier cam (which is buggie....don't use it...it'll crash the editor).

[Mr.Lee]

This is ingame, having compiled the lightmap for the 2nd time and 'Make Ground Hemi'. I still get this stuff.
Maybe its because the use of textures?
And i begin to wonder about the fact, maybe i put the scale on 4 while making the map.....

[Mr.Lee]

This post kept me thinking last night, could it be the problem that i use just 1 texture.
Do i have to apply multiple textures?
And i red something about an option 'merge' could this be the problem?

thanks