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Holbrook in Navajo County, Arizona — The American Mountains (Southwest)
 

An Ice Age Encampment at Rainbow Forest

 
 
An Ice Age Encampment at Rainbow Forest Marker image. Click for full size.
Photographed by Sandra Hughes Tidwell, September 12, 2025
1. An Ice Age Encampment at Rainbow Forest Marker
Inscription.
In the valley below, a group of highly mobile Native Americans set up their base camp next to a modest playa lake some 13,000 years ago. From this temporary encampment, they refurbished their stone tool kits and restocked their food supply and other wares. The playa provided freshwater for drinking, cooking, and other domestic needs, but also attracted an array of local and seasonal wildlife. During the Late Pleistocene, near the end of the last Ice Age, when the northern reaches of the North American continent were buried under thick sheets of glacial ice, the Petrified Forest area was substantially cooler and wetter than it is today.

Cottonwood and willow trees flourished beside flowing rivers and playa lakes, providing fuel for the people's fires and structural supports for their portable, hide-covered dwellings. Similar to today, the grasslands of Rainbow Forest attracted wildlife like coyotes, prairie dogs, jackrabbits, and pronghorn as well as songbirds, raptors, and waterfowl. However, the Late Pleistocene of Petrified Forest was also home to large mammals, including prehistoric horses, camels, bison, and mammoths. These early human inhabitants of Petrified Forest were masterful foragers, hunters, and trappers possessing an intimate knowledge of the many plant and animal species they relied upon for survival.

Caption:
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freshwater and abundant game animals, people have been drawn to this area for its ample outcropping of fossilized (that is, petrified) wood - a durable and colorful raw material used in the creation of their tools.
 
Topics. This historical marker is listed in these topic lists: EnvironmentIndigenous Peoples and CommunitiesPaleontology.
 
Location. 34° 48.911′ N, 109° 51.949′ W. Marker is in Holbrook, Arizona, in Navajo County. It is on Petrified Forest Road. The marker is located at the Rainbow Forest Museum and Visitor Center. Touch for map. Marker is at or near this postal address: 6618 Petrified Forest Road, Holbrook AZ 86025, United States of America. Touch for directions.

Regionally, this marker is in Arizona’s Hopi. It is also in the American Southwest, in the Mountain West, in Colorado Plateau, and at the Four Corners. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once New Spain and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within 11 miles of this marker, measured as the crow flies: Giant Logs (a few steps from this marker); Stephen Tyng Mather (about 300 feet away, measured in a direct line); Agate House (approx. Ύ mile away); When Crystal Forest Was a Forest (approx. 5.4 miles away); From Wood to Stone (approx. 5.4 miles away); First Impressions (approx. 6.1 miles away); Agate Bridge (approx. 6.7 miles away); Pioneers of Paleontology (approx. 10.2 miles away). Touch for a list and map of all markers in Holbrook.
 
Other markers no longer nearby. Triassic Landscape (was approx. 5.4 miles away but has been replaced with another marker
View from the marker image. Click for full size.
Photographed by Sandra Hughes Tidwell, September 12, 2025
2. View from the marker
now near it); Jasper Forest (was approx. 6.1 miles away but has been permanently removed).
 
 
Credits. This page was last revised on October 3, 2025. It was originally submitted on October 2, 2025, by Sandra Hughes Tidwell of Killen, Alabama, USA. This page has been viewed 52 times since then and 21 times this year. Photos:   1, 2. submitted on October 2, 2025, by Sandra Hughes Tidwell of Killen, Alabama, USA. • Andrew Ruppenstein was the editor who published this page.
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Jun. 22, 2026