Castleguard Cave Hindsight 2020

NSS 2021 Video Salon. Produced by Darryl Jensen, Aquatic Films, 2021. Three renowned Australasian cave divers come to the Canadian Rockies in winter to dive a frigid 900-meter sump in Castleguard Cave – Canada’s longest – to see what lies on the other side. This passage was unexplored for years. Why? Does it go? Over several freezing days, they struggle hauling heavy and sensitive gear through tight, miserable passage in pursuit of their goal to explore the unknown cave beyond.