Several thousand people showed up for this public event (tickets required) in Lone Tree (south Denver) from 1-7PM.  CaveSim was very popular and we kept busy all day.  There was great food, drink, and vendors, too.


Left: A girl explores CaveSim with one of our new lights donated by ElSpeleo. Right: Boys watching carefully to make sure they don’t hit the formations. Photos by Erik Mattson.

Kids learning about cave paintings from Dave. Photo by Erik Mattson