
Photo: Photograph by Mike Peel (www.mikepeel.net)., CC BY-SA 4.0, via Wikimedia Commons
The Willamette Meteorite, weighing approximately 15 tons and measuring roughly 10 feet tall by 6.5 feet wide, is the largest meteorite ever discovered in the United States and stands as one of the most significant iron-nickel meteorites on Earth. Currently housed at the American Museum of Natural History in New York, this massive celestial visitor displays distinctive conical cavities created by millions of years of terrestrial weathering. The meteorite's discovery site near West Linn, Oregon, sits in the Willamette Valley, where it had rested for an estimated 13,000 years after the last ice age glaciers transported it from its original impact location. What makes this specimen particularly remarkable is the complete absence of any impact crater at the discovery site, suggesting it traveled a considerable distance from where it originally struck Earth.
Willamette Meteorite comes to rest in the Willamette Valley after glacial transport during the last ice age
Clackamas people establish ceremonial traditions around the meteorite, calling it 'Tomanowos' and using pooled water in its cavities for healing rituals
Ellis Hughes discovers the meteorite on his property and secretly moves it, leading to a legal dispute with Oregon Iron and Steel Company
American Museum of Natural History acquires the meteorite following the resolution of ownership disputes
“Je pense qu'on doit revenir aux origines des Clackamas qui disaient que, peut-?tre, une intervention extraterrestre est apparue suite ? cette m�t�orite.”
“la plus grande m�t�orite d�couverte en Am�rique du Nord, la m�t�orite Williamette.”
The Willamette Meteorite's discovery story begins with Ellis Hughes, who found the massive iron-nickel specimen on his West Linn property in 1902. Hughes secretly moved the meteorite to his own land using a horse-drawn cart and block-and-tackle system, not realizing it actually belonged to the Oregon Iron and Steel Company. This led to a famous legal battle that ultimately resulted in the meteorite's sale to the American Museum of Natural History for $26,000.
Scientific analysis has revealed that the Willamette Meteorite is composed primarily of iron and nickel, with trace amounts of cobalt and phosphorus. Researchers believe it originated from the core of a shattered asteroid and likely fell to Earth thousands of years ago, possibly in what is now Canada or Montana. The distinctive cavities that characterize its appearance were formed through terrestrial weathering processes, as acidic groundwater slowly dissolved the iron over millennia.
Geological evidence suggests that glacial activity during the Missoula Floods transported the meteorite to its discovery location in Oregon's Willamette Valley. The absence of an impact crater at the site supports this glacial transport theory, though the exact timeline and original impact location remain subjects of ongoing research. The meteorite's journey across the landscape adds another layer of mystery to its already remarkable story.
What remains genuinely puzzling is the extent of the Clackamas people's traditional knowledge about the meteorite's origins. Their sophisticated understanding of its celestial nature, reflected in their name 'Tomanowos' meaning 'visitor from the sky,' suggests a deep cultural memory that may extend back thousands of years. The ceremonial use of water collected in its natural basins indicates a complex spiritual relationship that modern science is only beginning to appreciate.
Ellis Hughes spent three months secretly moving the 15-ton meteorite using only a horse-drawn cart and homemade pulley system
The Clackamas Nation has worked with the American Museum of Natural History to ensure their cultural connection to 'Tomanowos' is honored in its display
The meteorite's distinctive cavities can hold several gallons of water, which the Clackamas people traditionally used for healing ceremonies
Despite weighing 15 tons, the Willamette Meteorite is estimated to be only about half its original size due to terrestrial weathering
The original Willamette Meteorite is permanently displayed at the American Museum of Natural History in New York City, where visitors can view it in the Hall of Meteorites. The discovery site near West Linn, Oregon, is on private property and generally not accessible to the public, though a small memorial marker has been placed in the general area.
Portland, Oregon, approximately 12 miles northeast of the discovery site
The museum display can be visited year-round, though spring and fall typically offer the most comfortable weather for exploring the greater Portland area if you wish to see the Oregon discovery region.
Tunguska explosion site
The Tunguska site represents another mysterious celestial impact event that has generated theories about extraterrestrial intervention rather than natural meteorite activity
Wolfe Creek Crater (Kandimalal)
Wolfe Creek Crater demonstrates what a typical meteorite impact should look like, making the Willamette Meteorite's absence of an impact crater all the more intriguing
Zone of Silence
The Zone of Silence in Mexico is another location where meteorites have fallen and where locals report unusual properties, creating similar questions about extraterrestrial influence