LECTURE: Alan Cressler has been in over 4,000 caves around the world. He began cave photography in the 1980s and has used his skills to document cave biology and Native American usage of caves. Cressler will discuss his techniques and what he has learned over his 40 years of cave exploration.
PLANETARIUM SHOW: Supervolcanoes
Show times are 5 PM, 6 PM, and 8 PM.