"The Sinks" Historical

"The Sinks" Historical (HM1T1F)

Location: Lander, WY 82520 Fremont County
Country: United States of America

N 42° 44.868', W 108° 48.5948242'

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Inscription
"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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Details
HM NumberHM1T1F
Tags
Placed ByWyoming State Parks and Cultural Resources
Marker ConditionNo reports yet
Date Added Thursday, July 14th, 2016 at 1:02pm PDT -07:00
Locationbig map
UTM (WGS84 Datum)31N E 166021 N 0
Decimal Degrees42.74780000, -108.80991374
Degrees and Decimal MinutesN 42° 44.868', W 108° 48.5948242'
Degrees, Minutes and Seconds42° 44' 52.08" N, 108° 48' 35.689452" W
Driving DirectionsGoogle Maps
Area Code(s)307
Closest Postal AddressAt or near 3116-3148 WY-131, Lander WY 82520, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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