|Hell's Half Acre Lava Field trail at North Blackfoot Rest Area on I-15. (Julianne G. Crane)|
|Lava bowl. (Julianne G. Crane)|
|Close up of lava flow.|
The Idaho Historical Marker "Lava Formations" states: "Molten rock, forced upward from 30 to 50 miles through fissures in the earth had cooled into the hard lava found here."
"Continued pressure from below has made great cracks in the contorted surface. This lava solidified only a few thousand years ago, and not very much soil covers it yet. But vegetation is getting a start, and unless new flows intervene, windblown soils will cover these rock layers. Then the surface here will look the same as the surrounding plains, which also are layers of lava and windblown soil."
It is said that each year more than 100,000 people explore the rest area's trails.
|Lava Flow Campground (NPS)|
There is a 51-site campground among the lava formations beyond the visitor center. "Campsites are $10 per night per campsite ($6 per campsite in the early and late season when no water is available). First-come first-served, self register." (Senior Pass provides a 50-percent discount.)
There are a number of trails in the national monument, some with easy access for day hikes and wheelchairs.
However, be aware and stay on the trails -- two hikers when missing on Sept. 19, 2013, and both died from exposure within a couple days. They were discovered less than a mile of the trail.
To read more writing about the RV lifestyle by Julianne G. Crane, go to RVWheelLife.com
Top three photos: (Julianne G. Crane) Bottom: National Park Service.