Creating a Tunnel in Terrain

Support Modeling
1

Hi

I started working on a map and cannot find how to create a cave with 2 exits in a mountain (exit on each side and enlarged cavity in the middle)

the problem is that creating simple objects and connecting each side to the terrain is difficult due to a lot of edges,
and there is no tool for extending mesh (apart from Grab, which makes non-dividable mesh for continuing)

Is there a way to make a simple tunnel in terrain ?

2

submit your blend file.

there are 100+ ways to make a tunnel, the most effective way depends on your mesh.

fea6351f3b3e7c7db1d5ec90dd6283da.png1230×516 21 KB

most simple would probably be like this.

3

https://drive.google.com/open?id=0B3Xb_MBDV4gzN3Y4UkoxOGhpOGc

4