Just looking around I found this too:
Friends of Kartchner Caverns State Park
There's another good Flash presentation here too!

Any of you hear about the new cave we got down here?
StarNet - Kartchner Caverns
I haven't been there yet, but from what you see in the Virtual Tour at this site, anyone who has the chance has got to go...
myself included...
it's only about 35 mile East of here...

Remember?
Don Markstein's Toonopedia

Here's a great place to grab a few quotes for your E-mail signature:
Useless Knowledge

I wish I had a pocket version to use at work:
Lost in Translation

Check out the "Sneak Preview" section:
Techno-Impressionist Museum