Uploaded September 2011 | Updated September 2026, 15 hours ago

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The angelic harmonies of Mountain Man's "Mouthwings" echo in a tunnel on Hawk Hill, San Francisco.

Watch the other videos from Mountain Man and read the full blog post here: yourstru.ly/2010/03/10/mountain-man-mouthwings-from-a-tunnel-on-a-hill

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