I am a professional adventurer, explorer and athlete undertaking extreme expeditions all over the world. In 2008 I was part of just the 4th team in history to complete a human-powered, source to sea descent of the Amazon River over 6800km and 153 days. I am sponsored by Suunto, Rab, Zeal Optics and Meindl. In November 2009 I began a solo, on foot north to south crossing of the Islamic Republic of Iran. I started on the shores of the Caspian Sea and finished 60 days and 1700km later on the Persian Gulf. 

Find out more at www.markkalch.com