This week's Friday Night Video will leave you on the edge of your seat. Icebergs aren't generally thought of as prime climbing objectives, and with good reason. Nevertheless, professional climbers Klemen Premrl and Aljaz Anderle set about trying to summit an iceberg in Greenland's Disko Bay.

"I am realising that there is no longevity for climbers who climb icebergs. Nor for icebergs."

Dangerous and unpredictable with a tendency to crumble and roll, Klemen and Aljaz display unbelievable composure in a truly terrifying iceberg environment. Don't try this at home!