"The Sinks" are a series of cracks and crevices at the back of the cavern before you. The water of the Popo Agie River flows into the Sinks. It then reappears at the "Rise of the Sinks," a large calm pool ¼ mile down canyon. (45)
The Sinks are eroded into the soft white Madison Limestone formation. No spelunkers have explored very far into the Sinks since the cracks narrow down to very small log and rock chocked passages. (33)
It is unknown exactly how old the Sinks are although they are likely an Ice-Age feature thousands of years old. The glaciers that carved the canyon exposed the soluble limestone and the billions of gallons of water from the melting ice helped create the underground passages. (47)
For many years it was unknown whether the water flowing into the Sinks was the same water flowing out at the Rise. Dye test have proven the connection but have also revealed another mystery: it takes the water flowing in the Sinks over 2 hours to reappear at the Rise. It was also discovered that more water flows out at the Rise than goes in at the Sinks. Why the water takes over two hours to make the journey and where it goes during that time is still a mystery. (90)

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Show me all markers in:  Lander, WY  |  Fremont County  |  82520  |  Wyoming  |  United States of America

Sinks Canyon - Corridor to the Winds Historical
The Rise of the Sinks Historical
Popo Agie Power Historical
Sinks Canyon Historical
Site of Fort Augur Historical
Noble Lane Building Historical
Fremont Hotel Historical
M.N Baldwin Co. Historical
Bossert Building Historical
Noble Hotel Historical

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