Hi:
We had great success with a 24 hour period of thermography of Cima Lava tube in the Mojave Desert as a part of the NASA Spaceward Bound 2008 Mojave Desert Science Expedition.
NASA -Spaceward Bound-leading the way to "out of this world caving".
http://quest.nasa.gov/projects/spacewar ... pson1.html
Cheers:
Jim Thompson
NSS 13154 RL
The Explorers Club FN 05