Everything OddWay knows about. Narrow it down by what you're after, or where you're going.
Giant objects, odd monuments and things built for no clear reason.
Blackfoot, ID
Longer BLM access point into the Hell's Half Acre lava landscape for travelers wanting a more substantial volcanic stop. Carry water and follow marked routes; the terrain is sharp and exposed.
Soda Springs, ID
Public park centered on a naturally carbonated mineral spring where visitors have traditionally sampled the water. Use the developed spring and park facilities only.
Boise, ID
Museum next to the Old Pen complex with Idaho minerals, fossils and mining exhibits. It is an efficient way to add genuine geological context to the state's mine and lava-field stops.
Shoshone, ID
A privately operated lava-tube attraction eight miles north of Shoshone with a maintained self-guided route and provided lanterns. It is open for the 2026 season on a reduced weekend schedule after Labor Day and closes for winter after September 28.
Arco, ID
Large collapsed lava tube reached on the Caves Trail. NPS cave entry requires the current cave permit/screening procedure, and conditions can close caves seasonally.
Arco, ID
A steep black cinder cone with a short climb to panoramic views across the Great Rift volcanic landscape. Follow the maintained trail and current NPS weather guidance.
Tuttle, ID
A dramatic basalt gorge cut by the Malad River within Thousand Springs State Park. Use designated overlooks, trails and park access rather than unofficial cliff approaches.
St. Charles, ID
Guided Forest Service cave tour through large limestone rooms and formations in the Bear Lake area. Tickets, road conditions and seasonal opening dates should be checked in advance.
Wendell, ID
Large spring pours from the Snake River Canyon wall in another unit of Thousand Springs State Park. The canyon road is steep; follow park access and vehicle guidance.
Grace, ID
A publicly known lava tube where cold air can preserve ice into warm months. Conditions are rough and natural; visit only when legal and safe, with appropriate lighting and footwear, and never enter during closures.
Arco, ID
Short NPS trail across young-looking basalt, pressure ridges and lava textures near the monument entrance. Access can be affected by snow and seasonal loop-road operations.
Twin Falls, ID
A tall waterfall dropping into the Snake River Canyon with a short trail that can pass behind the falling water. Parking near the trail is extremely limited; use only legal spaces and choose alternate canyon parking when full.
Twin Falls, ID
High bridge over the Snake River Canyon internationally known as a legal BASE-jumping location. Visitors should use the official visitor-center overlooks and sidewalks; OddWay does not encourage jumping or climbing.
Hagerman, ID
State-park unit surrounded by spring-fed water and historic agricultural structures beneath Thousand Springs. Public trails and seasonal facilities make it a reliable stop.
Salmon, ID
BLM-managed geothermal soaking pools with parking and basic facilities south of Salmon. Use the developed site and follow current BLM rules instead of seeking undeveloped private springs nearby.
Twin Falls, ID
Massive waterfall on the Snake River often called the 'Niagara of the West.' Water volume varies dramatically with season and irrigation, but the city park and overlooks are established public access.
Soda Springs, ID
A carbon-dioxide-driven geyser accidentally created during drilling in 1937 and later fitted with a timer to erupt on a schedule. The city viewing area makes it an easy, legitimate unusual stop.
Arco, ID
Accessible short trails lead to welded lava cones formed around vents. These are named, distinct volcanic features rather than arbitrary extra pins inside the park.
Driggs, ID
Famous giant potato mounted on an old truck beside the Spud Drive-In, one of Idaho's signature roadside photo stops. View from the business/public area without blocking traffic.
Hagerman, ID
Joint visitor center for Hagerman Fossil Beds National Monument and Thousand Springs State Park, with fossil, geology and regional displays. It is the proper public starting point for understanding the fossil beds.
Arco, ID
A signed spur from the Broken Top area reaches molds left where lava flowed around and burned away trees. The mapped point is the shared public trailhead rather than an off-trail feature coordinate.
