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“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Tulelake in Siskiyou County, California — The American West (Pacific Coastal)
 

River of Rocks - The Devils Homestead Lava Flow

 
 
River of Rocks-The Devils Homestead Lava Flow Marker image. Click for full size.
By Don Morfe, July 2, 2009
1. River of Rocks-The Devils Homestead Lava Flow Marker
Inscription. At some time within the last several thousand years, an eruption of magna from the bottom of the earth crust sent a broad stream of hot liquid rock across this land. The flow started to your right, 3.2 kilometers (2 miles) south of here at the site of a spatter cone formation known as a Field of Chimneys. When the eruption stopped, the lava cooled and hardened into its present form, but how did it look like a river of rocks?

Pahoehoe lava began flowing downhill toward Tule Lake to your left. It was very hot (1200C), but cooling and loss of gas began right away. As the flow crept along the outer several inches solidified into a hard layer. Under stress from the still liquid and very mobile flow interior, the lava crust broke repeatedly, forming a jumble of frothy-looking plates that were rafted along like blocks of ice on a river.

By the time the flow reached here, cooling and loss of gas had transformed it into a rough cinder-like lava called aa.

Pahoehoe lava (pah-HOY-hoy) — a hot, gas rich, low viscosity basalt.
Aa lava (AH-ah) — a cooler, less gaseous, higher viscosity basalt.
 
Erected by National Park Service.
 
Location. 41° 47.586′ N, 121° 33.72′ W. Marker is in Tulelake, California, in Siskiyou County. Marker is on Hill Road (County Road
View of the River of Rocks - The Devils Homestead Lava Flow image. Click for full size.
By Don Morfe, July 2, 2009
2. View of the River of Rocks - The Devils Homestead Lava Flow
10), on the left when traveling south. Touch for map. The marker and lava flow are located within the boundaries of Lava Beds National Monument. Marker is in this post office area: Tulelake CA 96134, United States of America.
 
Other nearby markers. At least 8 other markers are within 3 miles of this marker, measured as the crow flies. Civilian Conservation Corps (a few steps from this marker); Beds of Lava (approx. 0.8 miles away); A Volcanic Classroom (approx. 2 miles away); The End of the Modoc War (approx. 2 miles away); Last Meeting of the Peace Commission (approx. 2 miles away); Canby Cross (approx. 2 miles away); Ambush at Midday - The Thomas-Wright Battle of April 26, 1873 (approx. 2 miles away); Modoc War Casualties (approx. 2.2 miles away). Touch for a list and map of all markers in Tulelake.
 
Categories. Environment
 
View of the River of Rocks - The Devils Homestead Lava Flow image. Click for full size.
By Don Morfe, July 2, 2009
3. View of the River of Rocks - The Devils Homestead Lava Flow
View of the River of Rocks - The Devils Homestead Lava Flow image. Click for full size.
By Don Morfe, July 2, 2009
4. View of the River of Rocks - The Devils Homestead Lava Flow
View of the River of Rocks - The Devils Homestead Lava Flow image. Click for full size.
By Don Morfe, July 2, 2009
5. View of the River of Rocks - The Devils Homestead Lava Flow
Sign at the Lava Flow image. Click for full size.
By Don Morfe, July 2, 2009
6. Sign at the Lava Flow
 
 
Credits. This page was last revised on June 16, 2016. This page originally submitted on February 11, 2013, by Don Morfe of Baltimore, Md 21234. This page has been viewed 347 times since then and 32 times this year. Photos:   1, 2, 3, 4, 5, 6. submitted on February 11, 2013, by Don Morfe of Baltimore, Md 21234. • Syd Whittle was the editor who published this page.
 
Editor’s want-list for this marker. A full view of the marker. • A wide area view of the marker and its surroundings. • Can you help?
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