Trip Planner:   USA  /  Idaho  /  Idaho Falls  /  Trails  /  Hell's Half Acre

Hell's Half Acre, Idaho Falls

(60 reviews on the web)
Hiking Trail
Hell's Half Acre Lava Field is a basaltic lava plain located on the Snake River Plain of Idaho in the United States. It is the easternmost of the basaltic lava fields on the Snake River Plain, located about west of Idaho Falls, Idaho and north of Pocatello, Idaho. In 1976, the National Park Service designated the northwestern portion of the site a National Natural Landmark. In 1986, the Bureau of Land Management recommended that of the site, located just southeast of the National Natural Landmark, to be a wilderness study area.Description of the siteThe Hell's Half Acre lava plain is located in Bingham and Bonneville counties in the state of Idaho. The site is about 150mi2 in size. The area where a former lava lake existed is marked by a 875yd long by 328yd wide depression near the summit of the lava field. Ten circular pits and two large lava tubes are also located near the summit. Two major lava flows, each about long by wide, extend from the main lava field to the south and southwest. These two lava flows surround "Morgans Pasture," a kipuka (or older geologic feature which was not covered by lava). More recently, scientists studying aerial photographs of the site discovered a 328yd long eruptive fissure partly buried under lava flows just from the northwest boundary of the lava field. This and other features of the site indicate that the fissure vent itself may be long.
To visit Hell's Half Acre and other attractions in Idaho Falls, use our Idaho Falls tourist route planner.
Source
Create a full Idaho Falls itinerary
map

Plan your trip to Idaho Falls

  • Get a personalized plan

    A complete day-by-day itinerary
    based on your preferences
  • Customize it

    Refine your plan. We'll find the
    best routes and schedules
  • Book it

    Choose from the best hotels
    and activities. Up to 50% off
  • Manage it

    Everything in one place.
    Everyone on the same page.

Plans in Idaho Falls by other users

28 days in Canada & United States BY A USER FROM MALAYSIA July, kids, outdoors, historic sites, museums, popular & hidden gems PREFERENCES: July, kids, outdoors, historic sites, museums ATTRACTION STYLE: Popular & hidden gems PACE: Medium 2 days in Idaho Falls BY A USER FROM UNITED STATES July, popular PREFERENCES: July ATTRACTION STYLE: Popular PACE: Medium 33 days in United States & Canada BY A USER FROM AUSTRALIA December, culture, outdoors, historic sites, popular & hidden gems PREFERENCES: December, culture, outdoors, historic sites ATTRACTION STYLE: Popular & hidden gems PACE: Medium 33 days in Idaho BY A USER FROM UNITED STATES May, popular & hidden gems PREFERENCES: May ATTRACTION STYLE: Popular & hidden gems PACE: Medium 3 days in Idaho Falls BY A USER FROM UNITED STATES May, popular PREFERENCES: May ATTRACTION STYLE: Popular PACE: Medium 9 days in Idaho Falls BY A USER FROM UNITED STATES June, kids, fast-paced, popular PREFERENCES: June, kids ATTRACTION STYLE: Popular PACE: Fast-paced 16 days in Jackson, Idaho Falls & Yellowstone National Park BY A USER FROM UNITED STATES June, teens, kids, relaxing, historic sites, museums, popular PREFERENCES: June, teens, kids, relaxing, historic sites, museums ATTRACTION STYLE: Popular PACE: Medium 7 days in Moran, Idaho Falls & Yellowstone National Park BY A USER FROM UNITED STATES July, teens, kids, popular PREFERENCES: July, teens, kids ATTRACTION STYLE: Popular PACE: Medium 10 days in United States BY A USER FROM UNITED STATES June, popular PREFERENCES: June ATTRACTION STYLE: Popular PACE: Medium 13 days in United States BY A USER FROM UNITED STATES July, teens, kids, popular PREFERENCES: July, teens, kids ATTRACTION STYLE: Popular PACE: Medium 14 days in United States & Vancouver BY A USER FROM UNITED STATES May, popular PREFERENCES: May ATTRACTION STYLE: Popular PACE: Medium 2 days in Idaho Falls BY A USER FROM UNITED STATES July, culture, outdoors, hidden gems PREFERENCES: July, culture, outdoors ATTRACTION STYLE: Hidden gems PACE: Medium
View more plans
Reviews
TripAdvisor
  • Hells half acre is right along a rest stop but worth the time to stop. There are clear paths and great informational signs. This would be a great afternoon spent with the family or on your own. Its wo...  more »
  • This attraction is really quite different. Thousands of years ago there was lava flow and this actually goes toward the Crater's of the Moon National Monument. This is located near the Rest Area off I...  more »
  • Stopped here with my wife as a spur of the moment. Great fun really enjoyed the terrain. The trails were nice, paved and well designed. Only down side was the lack of a sign that said that the place w...  more »