Watch: Cavers Visit Austria’s Third Longest Cave

Follow along for a quick glimpse of the epic Hirlatzhöhle, a 101 kilometer (62 mile) long and 1.07 kilometer (3,510 foot) deep cave in the Dachstein Mountains of Austria.

Filmed by Diving Maik, the short two-minute-long video follows Maik and his two friends during a trip back in February.

[via Vimeo]