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Keystone Canyon is a scenic canyon located approximately 12 miles northeast of Valdez, Alaska, in the Chugach Mountains.The canyon is characterized by its steep, almost perpendicular walls that rise over 600 feet, carved by the Lowe River over millennia.
The upper river then passes through Heiden Canyon before meeting and paralleling the Richardson Highway. Following this, it enters the narrow and steeply walled Keystone Canyon, which marks the transition between the upper and lower river. The lower river exits the canyon and turns northwest into a broad valley approximately 10 miles in length.
Pribilof Canyon, in the Bering Sea, southeast of the Pribilof Islands, Alaska; Scripps Canyon, off the coast of La Jolla, southern California; Zhemchug Canyon, in the central Bering Sea between the Aleutian Islands of Alaska and the Kamchatka Peninsula of Russia; the largest submarine canyon in the world based on drainage area
Keystone, South Dakota, a town near Mount Rushmore; Keystone, West Virginia; Keystone, Wyoming; Keystone at the Crossing, a business/shopping district in Indianapolis, Indiana The Fashion Mall at Keystone, located in the Keystone shopping district; Keystone Heights, Florida; Keystone Canyon, Alaska; Keystone Lake, a resort area near Tulsa, Oklahoma
Before winter of 1899, they had completed a 93 mile trail suitable for packhorses through Keystone Canyon and past Thompson Pass to the Tonsina River. [3] [6]: 11 By 1901, the pack trail was completed, and provided an "all-American" route to the Klondike gold fields. [3] The total distance of the road was about 409 miles (660 km).
The Rocky Gap Road in Red Rock Canyon NCA is a side canyon accessible only by an unmaintained primitive road from the scenic loop which mostly only off-road or high-clearance vehicles can access. State Route 159 cuts through the Cottonwood Valley, also a side trail of the Old Spanish Trail. The Wilson Cliffs, a massive escarpment, can be seen ...
The construction of the Trans-Alaska Pipeline System included over 800 miles (1,300 km) of oil pipeline, 12 pump stations, and a new tanker port.Built largely on permafrost during 1975–77 between Prudhoe Bay and Valdez, Alaska, the $8 billion effort required tens of thousands of people, often working in extreme temperatures and conditions, the invention of specialized construction techniques ...
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