Group of adventure tourists spelunking in Actun Tunichil Muknal cave, central Belize.

30's 40's active activity actun tunichil muknal cave adventure adventure tourism ancient athletic away from it all awe awesome belize cave cavern caving central america ceremonial artifacts challenge challenging color image discover discovery exciting exhilaration explore exploring fun hike hiking holiday learning leisure maya mayan artifacts middle aged outdoor recreation rugged share sharing spectacular together vacation walk wilderness wonder young adults group of people vertical undergound