American Solar Challenge: Arco, Idaho

The solar cars make a stage stop in Arco, Idaho on July 19. Check the American Solar Challenge 2018 page for event details. Follow the race and related events on Facebook with: American Solar Challenge and Oregon National Historic Trail.

Arco, Idaho: Jeffrey-Goodale Cutoff

The original route of the old Oregon Trail ran to Fort Bridger in the southwest corner of Wyoming, and then swung northwesterly again to Fort Hall on the Snake River in Idaho. From there, the earliest emigrants followed the mighty Snake along its broad, northwesterly sweep toward Oregon. After 1860, though, most took another route that carried them away from the river to skirt rough lava flows along the toes of the Sawtooth and Boise Mountains. This route, they hoped, would help them avoid conflict with the Shoshone and Bannock Indians who, with white outlaws, were raiding wagon trains along the Snake River. It rejoins the old route of the Oregon Trail northwest of Mountain Home, Idaho.

Experience the Jeffrey-Goodale Cutoff at these places:

  • Big Southern Butte, Idaho. Big Southern Butte, a landmark on the Jeffrey-Goodale Cutoff, looms 2,500 above the volcanic plain. To see it, take I-15 Exit 93 at Blackfoot and drive north on westbound US-20/26. The butte will become visible ahead to the left as you approach Atomic City. The trail runs between the US-20/26 and the foot of the butte. Look for a state sign about the formation’s geology at mile marker 272.8.
  • Craters of the Moon National Monument & Preserve, Idaho. Goodale&#’;s, drive southwesterly on US-93/US-20 to milepost 218.2. A pullout is on the right.

Last updated: July 2, 2018

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