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Mammoth vicinity

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Grand Loop Road, Forming circuit between Mammoth Hot Springs, Norri, Mammoth, Park County, WY



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Item Title


Location
Norri, Mammoth vicinity, WY

Find maps of Mammoth, WY


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER WY-55
Building/structure dates: 1870 initial construction
Building/structure dates: 1906 subsequent work
Building/structure dates: 1926 subsequent work
Building/structure dates: 1988 subsequent work
Part of building/structure is in Yellowstone National Park, Teton County, WY.
Significance: The construction of Yellowstone's Grand Loop Road was carried out by the U.S. Army Corps of Engineers, establishing a precedent later employed in other early parks. Although built as a military road, it was designed to carefully relate to the park's striking wilderness environment. The road corridor was located to minimize damage to its surroundings and a number of rustic bridges and structures were utilized to help integrate it with the landscape. Reconstruction of the system in recent yeas has destroyed much of its historic integrity; however, the Grand Loop generally follows its historic alignment and some of the rustic structures remain in use.

Subjects
"Mission 66" Program
Roads
Transportation


Related Names
Kingman, Lt. Dan
Chittenden, Capt. Hiram M.
U S Army Corps Of Engineers
Bureau Of Public Roads
Federal Highway Administration
Norris, Supt. Philetus
Lowe, Jet, Photographer
Culpin, Mary Shivers, Historian
Harvey, Elizabeth, Delineator
Salarano, Laura, Delineator
Hansen, Gerald J., Delineator


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
THE "MUD VOLCANO," A STINKY THERMAL FEATURE ON THE GRAND LOOP ROAD. ACIDIC HOT SPRINGS HAVE REDUCED THE UNDERLYING LAVA TO A FINE CLAY, PRODUCING AN AREA OF BOILING MUD. THE ODOR OF ROTTEN EGGS IS FROM HYDROGEN SULFIDE GAS.
OBSIDIAN CLIFF OVERLOOKS THE EAST SIDE OF THE GRAND LOOP ROAD. THE OBSIDIAN, A BLACK VOLCANIC GLASS, FORMED WHEN A LAVA FLOW CONTACTED GLACIAL ICE. IN THE CONSTRUCTION OF THE ROAD BY THE U.S. ARMY CORPS OF ENGINEERS, WORKERS CREATED THE LEDGE FOR THE ROAD BY BUILDING LARGE BONFIRES AGAINST THE CLIFF, THEN DASHING THE HEATED ROCK WITH COLD WATER, CAUSING IT TO SHATTER.
THERMAL FEATURE
TOWER FALL, VIEW FORM OVERLOOK
ROAD ALONG BURNED OUT AREA AFTER 1988? FIRE
VIEW LOOKING INTO GRAND CANYON OF YELLOWSTONE


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