Wawona Tunnel, side shaft

Photographer: o o o o o o o o o o o o o o o o o o
From: Sierra Forest, Melting Ice, Migratory Birds: Yosemite Photography

Wawona Tunnel, side shaft

in each of the two tunnels of Yosemite there are side shafts probably drilled to release air pressure during contruction and use of the tunnel. All lead to incredible overlooks for those willing to hike in the tunnel and flirt with death on the cliffs edge!