Walking through the Mosier Twin Tunnels is a neat experience. You'll find milepost 72 inside the tunnel as well as carved graffiti from 1921, detailing the names of people that were trapped in the tunnel by a snowstorm. There are side passages leading to windows known as adits. There's a restored walkway outside the second adit, but it's been fenced off, preventing access. West of the tunnels is a 700 foot long catchment structure designed to catch rocks falling from above. Beyond the tunnels, the trail continues another 4 miles to the Mark Hatfield West Trailhead, near Hood River. Or, you can return the way you came.
Where motorists on old U.S. Highway 30 once crept around curves high along the cliffs of the Columbia River Gorge, hikers, bicyclists and users of other muscle-driven forms of transportation leisurely enjoy the view from the Historic Columbia River Highway State Trail. The trail, two disconnected paved ribbons along abandoned stretches of the historic highway, give you more than 10 miles of sightseeing thrills. Between Hood River and Mosier, the five mile Twin Tunnels segment passes through two climate zones. Starting at the east Mark O. Hatfield Trailhead near Mosier, the trail leads through semi-arid terrain dotted with ponderosa pine for about a mile until you reach the Twin Tunnels. Spectacular geologic formations tell the story of the gorge's creation. After passing through the tunnels, you'll emerge into a forest of fir trees and other common western Oregon plants. Viewpoints along the 3.5 mile segment from the tunnels to the west Mark O. Hatfield Trailhead overlook the river.
We were confused and did not find the tunnels.
Don't make the mistake we did by thinking you drive through this on the interstate. It is for pedestrians.
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