Periodic Spring
Posted by: 
brwhiz
N 42° 30.378 W 110° 54.490
12T E 507544 N 4705996
This Historic Marker is located, along with three others, on the east side of US Highway 89 at the summit of Salt River Pass.
Waymark Code: WMFC7E
Location: Wyoming, United States
Date Posted: 09/26/2012
Views: 5
Periodic Spring
Located 4 miles east of Afton in the Salt River Range, is the largest of three natural springs in the world that naturally turn off and on. Water flow is interrupted from anywhere between 3 to 30 minutes, generally between the months of August-May. It is thought that a cave behind the spring creates a siphon which causes interruptions of the water flow. Its ability to turn off and on during low discharge stages has fascinated visitors since prehistoric times. Access to the spring is via the Swift Creek Road and requires a ¾ mile hike by trail
Marker Name: Periodic Spring
Marker Type: Rural Roadside
Group Responsible for Placement: Bridger National Forest
Marker Number: LN0025A.11
Addtional Information: Not listed
Date Dedicated: Not listed
Web link(s) for additional information: Not listed
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Visit Instructions:
Please post a photo of you OR your GPS at the marker location. Also if you know of any additional links not already mentioned about this bit of Wyoming history please include that in your log.