Oh, solved, although it has blocked doing something.
Anyway, there goes the heigtmap:
Click image for larger version. 

Name:	blocked.PNG 
Views:	11 
Size:	409.5 KB 
ID:	132971

Note: Yeah, I know that the terrain's Z axis is too big compared to its X axis.

It should look more like this:
Click image for larger version. 

Name:	burgosEarrth.PNG 
Views:	12 
Size:	2.26 MB 
ID:	132972