Prehistoric River - Deschutes County, OR
Posted by: Groundspeak Premium Member silverquill
N 43° 55.093 W 121° 00.500
10T E 659900 N 4864717
Quick Description: This canyon in central Oregon was formed by a prehistoric river that drained a large ice lake. It is visible on the north side of Route 20 in Lake County, and designated with a state historical marker.
Location: Oregon, United States
Date Posted: 10/30/2007 11:01:40 PM
Waymark Code: WM2GJ9
Published By: Groundspeak Premium Member Blue J Wenatchee
Views: 39

Long Description:


Prehistoric River - Lake County, Oregon


Ages ago a river flowed across the high desert country in the rocky canyon several hundred yards beyond the marker. The prehistoric river drained a large ice age lake that formed from the blocking of normal drainage in the area by lava flows. The lake covered a large area to the east in the vicinity of the present millican country. During periods of high water the lake spilled over a low pass at the eastern edge of horse ridge-the ridge seen behind you and to your right. The escaping water cut into the loosely consolidated lava flows creating the rocky gorge visible from the viewpoint and later called Dry River. Once free from the horse ridge barrier dry river flowed north into the present Crooked River. Evidence indicates that the ancient river was once the scene of many Indian encampments near its source at the lake.


Prehistoric River - Lake County, Oregon
Waymark is confirmed to be publicly accessible: yes

Requires a high clearance vehicle to visit.: no

Requires 4x4 vehicle to visit.: no

Public Transport available: no

Website reference: [Web Link]

Parking Coordinates: Not Listed

Access fee (In local currency): Not Listed

Visit Instructions:
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Recent Visits/Logs:
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Sage Rat 5 visited Prehistoric River  -  Deschutes County, OR 2/18/2009 Sage Rat 5 visited it
HappyFrog (& gang) visited Prehistoric River  -  Deschutes County, OR 6/29/2008 HappyFrog (& gang) visited it
Volcanoguy visited Prehistoric River  -  Deschutes County, OR 3/5/2008 Volcanoguy visited it

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