Take a deep dive back into this audience favourite from this year's Festival.

For adventurous thrill-seekers, caving is hard to beat. Combining climbing, diving, wayfinding and overcoming claustrophobia, it’s a unique skill set not for the faint of heart. Two gritty teams of hobbyist explorers are on the cusp of discovering new territory. Katie Graham is an accountant by day who is obsessed with the Bisaro Anima cave in the Rocky Mountains, and she is willing to risk it all to achieve a caving depth record that depends on a successful scuba dive. Further west on Vancouver Island is Franck Tuot, who sacrifices weekends away from his young family with the goal of linking two tunnel systems that will mark the longest-known cave in Canada. Regardless of whether they are successful in their missions, understanding their motivations and dedication is what makes their pursuits so compelling. Accessing the depths of the earth through muddy crawls, tight squeezes, and seemingly endless pits, for these intrepid explorers, there’s nowhere to go but down. Film note by Hot Docs programmer Alexander Rogalski.

Tickets: $15 (Members from $10)