Tunnel ? (Help)

I want to create an own made tunnel but how can i delete the grass?

Screen:

[mkingy]

Lower the terrain in that area - then model the grass within your 3DS tunnel!

mkingy wrote:

Lower the terrain in that area - then model the grass within your 3DS tunnel!

Thx, But how do i delete the water?

[mkingy]

Unfortunately you cannot delete the water or remove it so you need to raise the entire thing (coaster + terrain) up by 10-15m!

Get a new coaster and add a track along the length of the tunnel. Make the track segment invisible and add a virtual tunnel. Tada!

^ You don't even need to do all that, just select virtual tunnel and add your tunnel

CKidd wrote:

^ You don't even need to do all that, just select virtual tunnel and add your tunnel

But then you get a circle tunnel i want that you can't see the grass in the tunnel