If you are a good mapper, fell free to modify the map. I'm good with shaping the brushes, but I'm not good at entities and optimization...
This map is based on the nnk_some_where map. I stopped working on the map for more than an year (I think). Later I wanted to make a wasteland map for HL, just for fun. I recalled that this map is not finished, so I finished it.
Issues:
Clipping errors. The triangle terrain looks Really cool, but it causes clipping problems. I tried to remove as much errors as possible (some of the fixes that I tried caused even worse problems), but there are still many. The edges of the cliffs have no clipping problems, so you won't have any problems with falling from them.
Performance: I have no idea how will it perform on weak PCs. I have a nice PC on which the compiling of the map takes only several minutes (less than 10 I think) and the map is running smooth.
Lighting: It's messed up on some surfaces. It's because of my attempts to optimize the map.