Devils Tower Poster Appalachia Fort Jefferson was built between

Fort Jefferson was built between 1846 and 1875 to defend the shipping gateway to the Gulf of Mexico

” Palo Duro Canyon State Park extends roughly 120 miles and has an average width of 6 miles

The Charley River flows into the mighty Yukon

Visitors to the area today enjoy camping

Devils Tower Poster Appalachia Fort Jefferson was built betweenProduct Details 14 x 22 poster Interpretive Copy Devils Tower was difficult to reach, despite becoming Americas first national monument in 1906. Motorists who arrived from the east were compelled to ford the Belle Fourche, and often found themselves stranded for days when trapped by unpredictable rises in the river. Local pressure finally resulted in building a bridge over the Belle Fourche in 1928. Improved roads soon followed, granting access to all.