Posts Tagged ‘cavers’

Burkhard Bilger: The Dark and Dangerous World of Extreme Cavers : The New Yorker

Friday, May 30th, 2014

In deep: The dark and dangerous world of extreme #cavers. Ultimate superlight gear & max calories burned per hour.
http://www.newyorker.com/reporting/2014/04/21/140421fa_fact_bilger

BY BURKHARD BILGER