Ice Age Floods National Geologic Trail
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Travelers’ Rest State Park Idaho
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Travelers’ Rest State Park

Travelers' Rest State Park near Lolo, Montana, is the only archaeologically verified Lewis and Clark campsite in the nation -- and it sits on ground that was repeatedly submerged beneath Glacial Lake Missoula during the ice ages. The Corps...

Location
Idaho
46.753, -114.090
On the trail
Ice Age Floods NGT
WA · OR · ID · MT
Record
Documented site
scholarship integrated
Capture
June 2026
scheduled

Travelers' Rest State Park near Lolo, Montana, is the only archaeologically verified Lewis and Clark campsite in the nation -- and it sits on ground that was repeatedly submerged beneath Glacial Lake Missoula during the ice ages. The Corps of Discovery camped here in September 1805 and again in June-July 1806 at this historic crossroads where the Bitterroot and Clark Fork valleys meet. Fifteen thousand years before Lewis and Clark, the same spot lay beneath hundreds of feet of glacial lake water, and the fertile soils the explorers found supporting abundant game and plant life were deposited by those flood events. The park's interpretive exhibits tell the human story, but the landscape itself tells the geological one: look at the surrounding hillsides for the strand lines of Glacial Lake Missoula, the horizontal benches marking successive lake levels. This park uniquely connects the Missoula Floods story to the Lewis and Clark story, two of the American West's greatest narratives intersecting at a single campsite. Stand where the Corps stood and imagine the water that once filled this valley to the mountaintops.

From the IAFI archive
How we will interpret it

What the June trip captures here.

Three vantages no single photograph can hold, the same treatment that made Dry Falls legible.

360° · ON THE GROUND
Walk the site

Ground-level panoramas along the feature, so the scale of the flood landscape is something you stand inside.

DRONE · THE FORM ★
Read it from above

An aerial reveals the geometry of catastrophe: scour, channels, and bars that are invisible at eye level.

3D · PHOTOGRAMMETRY
Spin the geology

A model of a key outcrop you can rotate and measure in the browser, the rock itself, on the page.

Capture window mid-June through mid-July 2026 · slots fill on this page as the campaign delivers.

Loading map…

Flood-extent overlay shows the maximum reach of the Missoula Floods.

On the trail

The site in its place along the flood path, with the maximum flood extent drawn over the modern map.

View on the interactive map Cinematic timeline · 3D flood · every captured site
Sources & attribution
IAFIIce Age Floods Institute, geologic context
T360Terrain360, immersive capture scheduled June 2026
NPSIce Age Floods National Geologic Trail
All the sites
Captured, and coming this summer.
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