Epic repel down the mouth of an active volcano

This is probably the manliest thing I've seen all week. A bunch of dudes repelling down the mouth of an active volcano towards a fiery lake of lava just for the hell of it.

The epic expedition took place on the remote Ambrym Island in the South Pacific atop the Marum Volcano and was lead by badass scientist and filmmaker, Geoff Mackley, with the help of extreme climbers, Drew Bristow and Johno Smith, as well as videographer, Daniel Lacy. Hats off to you, Gents. You guys make science awesome.

Video Link: Abseiling Towards a Lava Lake - Extreme Video From Marum Volcano, Ambrym, Vanuatu!