I use Strata3Dpro (http://www.strata.com) but then I mainly model buildings and similar structures but I would imagine you might be able to work with it Dave >Can anyone advise me of a 3d maping system that can be used for drawing >underground maps, or of a suitable Autocad macro. I am used to 2 d Autocad >but would like a more friendly 3D package. Of course, there are limitations >on cost thanks john -- David A. Summers Curators' Professor of Mining Engineering Adjunct Professor of Nuclear Engineering Director Rock Mechanics and Explosives Research Center University of Missouri-Rolla, Rolla, MO 65409-0810 "fools talk, wise men listen." (a variant of Prov 12:23) phone: (573) 341 4314 FAX: (573) 341 4368 related web pages A growing selection of Dr. Summers' papers are being put on the Web and can be accessed through the Bibliography http://www.umr.edu/~rockmech/faculty/biography.html Rock Mechanics http://campus.umr.edu/rmerc/ Waterjet Lab: http://www.umr.edu/~waterjet/ UMR Stonehenge: http://www.umr.edu/~stonehen/ Personal: http://www.umr.edu/~rockmech/data/Summers.html Mining Eng. http://www.umr.edu/~mining/ Waterjet Assoc http://www.wjta.org/ International Waterjet Society: http://www.iw.uni-hannover.de/iswjt/ Next American Waterjet conference: http://www.wjta.org/conference.htm 7th Pacific Rim Conference (May 2003) http://www.kojet.org