Sharing the Fascinating Ice Age Floods Story Since 1995

GO PLACES! DO THINGS!

Along the ICE AGE FLOODS
NATIONAL GEOLOGIC TRAIL


The Ice Age Floods National Geologic Trail covers some 16,000 square miles (41,440 km2) in present day Montana, Idaho, Washington, and Oregon. We have hand picked some of the best of the best places along the Trail and present them here for you enjoy and explore! Check back often, we will be adding new and wonderful destinations for your entire Family to enjoy!

MONTANA – IDAHO – WASHINGTON – OREGON

SOME PLACES TO GO and THINGS TO DO in MONTANA

Montana - Places to GO and Things to DO

Bison Range

February 5, 2023

Bison Range The Bison Range was established by President Theodore Roosevelt in 1908 to conserve the American Bison.  Since that time it has been managed as a wildlife refuge and native grassland. Today the management is done by the Confederated Salish and Kootenai Tribes. The range is a small, low-rolling mountain connected to the Mission Mountain Range by a gradually descending spur. Range elevation varies from 2,585 feet (788 m) at headquarters to 4,885 feet (1,489 m) at High Point on Red Sleep Mountain, the highest point on the Range.  Much of the Bison Range was once under prehistoric Glacial Lake Missoula. The upper part of the Range was above water. Red Sleep Mountain scenic drive leads to this high point, which has spectacular views across what was once the lake to the Mission Mountains on the other side.  Other flood features are evident on Buffalo Prairie scenic drive. Old beach lines (strandlines) can be seen on north-facing slopes and some large erratics are located near the old corrals. There is a visitor center near the entrance which has a display and videos of Glacial Lake Missoula as well as information on the tribes of the Flathead Reservation and the abundant wildlife, including birds, bears and antelope.  There is also a gift shop.  Camas Prairie ripples and several other important features of Glacial Lake Missoula are in close proximity to this site, much of them are located on tribal lands.  The entrance is off US 93 and MT 212 N about an hour north of Missoula. Bison Range58355 Bison Range Rd, Moiese, MT (406) 644-2661 bisonrange.org FEES – there is a fee for entrance, including the day use area, except for CSKT tribal members OPEN HOURSWinter Hours (Nov-April)Gate: 8am–6pmVisitors Center: 8am–5pm Red Sleep Drive: closed Buffalo Prairie Drive: 8am-6pm Summer Hours (May-Oct)Gate: 7am–8pmVisitors Center: 8am–7pm Red Sleep Drive: 8am–7pm Buffalo Prairie Drive:8am–8pm  Restrictions: Vehicles over 30 feet long and those owing trailers as well as motorcycles, ATVs, and bicycles are not allowed on either drive.  Visitors must remain inside vehicles at all times except for designated areas      

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Montana Natural History Center

August 13, 2022

Montana Natural History Center Ice Age Floods National Geologic Trail  The mission of the Montana Natural History Center is to promote and cultivate the appreciation, understanding, and stewardship of nature through education. Founded in 1991, MNHC was the brainchild of a group of educators who were involved in various efforts to educate both kids and adults about the natural history of western Montana, and who decided to unite those efforts into one environmental education organization. MNHC provides nature education programming for people of all ages through summer camps, kids’ activities, Visiting Naturalist in the Schools, Master Naturalist certification courses and Field Days, evening programs, Field Notes on Montana Public Radio, museum tours, and more.  We have a variety of exhibits that focus on the flora, fauna, geology, and ecology of our beautiful state. Please stop by and visit! MNHC often partners with the Ice Age Floods Institute to share fields trips and lectures about the Ice Age Floods.   MNHC has exhibits that help visitors explore the Glacial Lake Missoula and Ice Age Floods. Learn more at:Explore Glacial Lake Missoula | Montana Natural History Center (montananaturalist.org) The Glacial Lake Missoula Chapeter of the Ice Age Floods Institue also produced a short movie about Glacial Lake Missoula. You can find a link here. Quick Facts Location:120 Hickory Street, Suite A, Missoula, Montana

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Little Money Creek Gulch Fill

May 1, 2023

Mounds of soil, sand, gravel, and other coarse materials covered with light vegetation can be seen in the side gulches all along the Flathead River where tributaries drained into what was Glacial Lake Missoula.  They were deposited by currents eddying into the slower water in these gulches and also by the drop in velocity of the streams carrying deposits from higher elevations on the far side of the river along the path of the escaping floodwaters.  The flow of floodwaters through this narrow valley was estimated by J.T. Pardee at between 8 and 10 cubic miles per hours – more than the combined flow of all modern rivers in the world.  Similar gulch fill can be seen in many locations along this beautiful stretch of the river, which today generally flows smoothly and looks completely flat. There are numerous pull-outs along MT 200 between Perma and Paradise; the view pictured here is at mile marker 91.

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SOME PLACES TO GO and THINGS TO DO in IDAHO

Idaho - Places to GO and Things to DO

Glacial Dam at Green Monarch Ridge View Point

August 12, 2022

Glacial Lobe Dam at Green Monarch Ridge View Point Ice Age Floods National Geologic Trail  As the Purcell Trench ice lobe of the Cordilleran Ice Sheet advanced south from Canada, it was stopped by the Green Monarch Ridge, building an ice dam 4,000 feet (1219 m) tall and nearly 40 miles (64 km) wide that blocked the Clark Fork river, thus filling glacial Lake Missoula. View the Green Monarch Ridge and the Purcell Trench from a large pullout on Idaho State Route 200, about one mile (1.6 km) west of Hope, Idaho and 15 miles (24 km) east of Sandpoint, Idaho. Quick Facts Location: Idaho State Route 200, about one mile west of Hope, Idaho and 15 miles  east of Sandpoint, Idaho.

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Celebration Park – Home of Melon Gravel

July 10, 2026

17,000 years ago, a massive Ice Age lake – now called Lake Bonneville – filled a large portion of present-day Utah. As temperatures changed, the influx of ice melt caused the lake level to rise. In addition, the Bear River, once a tributary of the Snake, was diverted by volcanic activity back into Lake Bonneville. These factors ultimately led to the breaching of a sedimentary rock dam at Red Rocks Pass, Idaho. There was only one ice-age Bonneville Flood because Lake Bonneville broke through a rock dam, unlike the Missoula Floods whose glacial ice dam repeatedly dammed Glacial Lake Missoula, then broke and rebuilt.  1,100 cubic miles of Lake Bonneville water rushed through the Snake River Canyon, and it took only six weeks for Lake Bonneville to empty the equivalent volume of modern-day Lake Michigan. The Great Salt Lake we know today is a remnant of Lake Bonneville, but at one tenth the size, it is a mere puddle compared to what the lake used to be.  The power of this catastrophic flood widened canyons as the force of the water pulled huge chunks of basalt off the cliffs and tumbled them around, smoothing their jagged edges along the way. As the canyon width narrowed, the force and velocity of the flood increased. Wherever the canyons widened, the flood lost force and velocity, the waters slowed and began dropping its bedload – in this case, giant tumbled basalt boulders instead of your typical river gravel.  These flood-rounded boulders, named melon gravel due to their distinct shape, are scattered over vast areas of land. The rocks’ unique outlines and smooth surfaces caught the eye of Native American tribes in the area, who have used them as canvases for petroglyphs for thousands of years. Visitors can see the medium sized flood deposits just outside the visitor center, or hike upriver to see gigantic melon gravel the size of heavy-duty trucks.  Celebration Park is located in the Snake River Canyon, approximately 23 miles south of Nampa, Idaho. It is home to an enormous melon gravel field deposited by the Bonneville Flood. 

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SOME PLACES TO GO and THINGS TO DO in WASHINGTON

Washington - Places to GO and Things to DO

Chinook Scenic Byway

October 6, 2022

The Chinook Scenic Byway is recognized as a premier driving tour in Washington State.  The byway travels through the Mt. Baker-Snoqualmie National Forest and Mount Rainier National Park. Experience the diverse landscape of the Central Cascades, from Enumclaw and the glacier-fed White River Valley to

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Postmortem on the southern Cordilleran Ice Sheet

January 26, 2024

(21Feb2024) On 18 March 2924 at 7:00pm the Puget Lobe Chapter io the IAFI will have Dr Ralph A Haugerud give his presentation “the Postmortem on the Southern Cordilleran Ice sheet.  Death of an ice sheet can have many causes, as shown by retreat of

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SOME PLACES TO GO and THINGS TO DO in OREGON

Oregon - Places to GO and Things to DO

Crown Point National Natural Landmark

July 7, 2022

Crown Point National Natural Landmark Ice Age Floods National Geologic Trail – Historic Columbia River Highway This spectacular viewpoint along the Historic Columbia River Highway 30 was the site of the 1916 dedication of a highway that was, for that time, an innovative European-style road

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Museum of Natural History, University of Oregon

April 23, 2024

Museum of Natural and Cultural History, University of Oregon The museum offers a variety of seasonal and year-round programs for science and culture enthusiasts of every age. Delve into Oregon’s story, from the archaeology of the First Americans to the dynamic cultures of today’s Tribes.

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Columbia Gorge Discovery Center & Museum

July 7, 2022

Columbia Gorge Discovery Center & Museum Ice Age Floods National Geologic Trail, Lewis & Clark National Historic Trail, Oregon National Historic Trail The Columbia Gorge Discovery Center & Museum is located on a 54-acre point of land adjacent to the Columbia River and is the

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MONTANA – IDAHO – WASHINGTON – OREGON

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