Cave Diving: Things to Know Before Exploring Underwater Caves

Scubadivers explore the fresh waters of cenote Kukulkan located in the Mexican Yucatan.

For the adventurous, cave diving offers an irresistible mix of mystery and danger. (Image: Conchasdiver via Dreamstime)

Pioneering Mountain Climber Made Films to Show Why She Loved Skiing

Mt. Columbia, the first ascent for ladies, 1938.

Female adventurer Christine L. Reid photographed and filmed her skiing and mountain climbing trips, including the first ascent for ladies of Mount Columbia in 1938. (Image: Public Domain via flickr)