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historicalmarkerproject/markers/HM1C7R_devils-orchard-trail_Arco-ID.html
Two thousand years ago, nearby volcanoes erupted so violently that they tore themselves apart. Rivers of lava floated huge chunks of crater wall down to this spot. Time passed. Rocks crumbled. The seeds of rabbitbrush and limber pine root in the s…
historicalmarkerproject/markers/HM1C7Q_north-crater-lava-flow_Arco-ID.html
After centuries of rest, North Crater stirred once more. The old crater wall broke open and lava poured out carrying great chunks of broken wall. Again it rested. About 2000 years ago, lava flowed out for the last time.
historicalmarkerproject/markers/HM1C7P_north-crater-flow-trail_Arco-ID.html
Here in the path of a lava flow you can view a variety of volcanic features, now frozen in time. The trail crosses over the most recent of several successive flows that originated from the North Crater area. As you walk the path, imagine slow movi…
historicalmarkerproject/markers/HM1C7N_get-over-it_Arco-ID.html
"To understand the West, you have to get over the color green; you have to quit associating beauty with gardens and lawns?" Wallace Stegner.
What was drinking up 80% of the water used in this park? Lawns.
*Planting lawns encourages non-nativ…
historicalmarkerproject/markers/HM1C7K_just-down-the-road_Arco-ID.html
The Strangest 75 square miles on the North American continent-Comment from an early traveler.
The landscape before you was explosively created by volcanic eruptions. Cracks in the earth's crest allowed lava to blast, plop, and flow onto the sur…
historicalmarkerproject/markers/HM1C6W_prehistory-and-recent-history_Arco-ID.html
Big Southern Butte — A Waypoint for Thousands of Years"Just passing through, ma'ma"The harsh conditions on the plain discouraged most long-term settlement, but Big Southern Butte was a clear waypoint. In the 1800s, travelers headed toward Fo…
historicalmarkerproject/markers/HM1C3P_lost-river_Arco-ID.html
When its water is not diverted for upstream irrigation, Lost River flows past here into a sink 14 miles to the northeast.
Lava flows in the Snake River plains buried old channels of Lost River, Little Lost River, and Birch Creek. No longer able…
historicalmarkerproject/markers/HM1C3O_nuclear-reactors_Arco-ID.html
Since 1949, more nuclear reactors - over 50 of them - have been built on this plain than anywhere else in the world.
This 900-square-mile Idaho National Laboratory is the birthplace of the Nuclear Navy. Commercial power reactor prototypes, incl…
historicalmarkerproject/markers/HM1B02_atoms-for-peace_Arco-ID.html
An important page in atomic history was written here on July 17, 1955, when the lights of Arco were successfully powered from atomic energy. Chosen by the Atomic Energy Commission as an experiment in the peaceful use of atomic power, Arco, Idaho b…