Did you know that 3D caves can be displayed with Acrobat?

If you have Acrobat 8.1 check this out.
http://jonjasper.com/pdf3D/Timpanogos%20Cave%20System.pdf


You can if you can find some kind of way to convert Compass's or
ArcGIS's Virtual World file .wrl into the adobe Portable Document
Format (PDF).

The problem is most of the conversion techniques are a bit expensive
and inaccessible. Probably the best way is to own Acrobat 3D
(http://www.adobe.com/products/acrobat3d/). Also the newer 3D CAD
software can export directly into a 3D PDF.

However, I did not have access to Acrobat 3D, Microstation, or like.
I used an updated version of Deep Exploration, a 3D format version
software. This software converts .wrl files into a .pdf files. Or
you can convert the file in a Universal 3D file (.u3d) which can be
imported into Photoshop CS3 extended and Acrobat 7 or better. Being
able to import the file into other programs open the ability to a bit
of artistic rendering.

Acrobat 8.1 is needed to handle acrobat new 3D file compression. The
file compression amazingly slims down large .wrl files. The feature
is really great for large caves or ArcGIS 3D views. The file
compression took the following view of Chosa Draw ACEC outside of
Carlsbad taht was about 90 MB in .wrl and created a 2 MB pdf.
http://jonjasper.com/pdf3D/Timpanogos%20Cave%20System.pdf

So here is the bad news. These software programs are a bit pricy:
Acrobat 3D is $699 and Deep Exploration is $1500 for an upgrade.
However, both have trial versions.