Arizona Canyoneers | Richard D. Fisher

Arizona Canyoneers
First to Explore
Earth’s Deepest Canyon in Tibet

Gil and Troy Gillenwater, Eric Manthey,
and Richard D. Fisher were the first
to identify the earth’s deepest canyon,
first descent of the Yarlong Tsang Po
River, and the first to find the
last great hidden falls of this legendary gorge.


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