Landscape Cross Section of Real Locations I'm trying to use Blender create landscape cross sections like this one 

I have to use heightmap data of real locations. 
Creating the distortion just on the top face of the box is working fine, the issue I face are the sides as the texture does not extend along the distortion as you can see in the image below.

Any idea how I can make it look like the example I showed above?
Create vertex group for top part
Unwrap object before using modifier
Assign material on sides
Add Displace Modifier and use this Group


In your case seems like Hieghmap texture does bnot overlap edge. Extend a bit texture size in texture properties or scale UVmap in UV editor.





Or you can change Mapping type ...

Clip


Extend


Repeat