Great Basin Poster Montana Around 1085 CE a violent

Around 1085 CE a violent eruption brought the dormant San Francisco volcanic field in northern Arizona back to life

Much of the same route carved out of the granite cliffs back then

The bridge is unique to South Dakota

Before the bridge and connecting highway were built

while allowing some activities not traditionally accepted in national parks

Great Basin Poster Montana Around 1085 CE a violentProduct Details 14 x 22 poster Interpretive Copy When Lehman Caves was dedicated as a national monument on August 6, 1922, an automobile road granting access to the grandeur of Wheeler Peak was only a dream. For many years the untamed mountain could only be viewed on foot or by horse. The reality of driving into the alpine landscape finally emerged in July 1966 with the completion of the 12 mile road known today as Wheeler Peak Scenic Drive.