Just in case anyone was curious what the MAP files actually contain, during my work on this I wrote a little Visual C++ 8.0 / OpenGL app so I could visualise it (3D geometry is not really my thing).
The image below shows the triangles contained in the dreadlands.map file, looking from the tunnel to Firiona Vie out across the zone (the box in the middle is Karnor Castle).
The text shows the X,Y,Z position you are viewing from, along with the Node (bounding box). The next line shows some info about the bounding box and finally the BestZ, i.e. the elevation of the ground at the X,Y position you are at.
The app is not user friendly (need to hard code the path to the zone file as well as the X,Y,Z position you want to look from, otherwise I would have posted the code for that too.
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