It's a procedural terrain, well 2 actually.and it generates on the hoof each time you use one. It has some odd way of handling the large numbers of polygons, without causing the world to implode.
Something to do with computers, I think.
(Something to do with computers, I think.
J Peasemould Gruntfuttock Alpha Mike Foxtrot,
Tue 3 Mar 2009, 10:22,
archived)