Thursday, July 13, 2023

10 July 2023 Sinks State Park

 With the weather turning nice, we headed for Sinks Canyon State Park, just west of town. In the park, the Middle Popo Agie River goes into a large underground cavern for ½ mile and then flows back out. The entrance to the cavern is pretty large. They don’t know the actual path of the water since the cavern is chocked with rock and tree stumps from flash floods. It takes the water 2 hours to travel that ½ mile before it bubbles out of the ground into a large pool before continuing down the canyon. They have conducted dye tests confirming the same water going in is coming out at the Rise, but additional water is present and they can’t figure out where it’s coming from…mystery!  In the pool are hundreds of very large trout that had worked their way up stream (they could not have survived going through the cavern) to spawn and stayed because the pool does not freeze over and there is a good food supply. They do allow you to buy food for a quarter to feed them from the overlook. After taking in the Sinks, we continued up the road into Shoshoni National Forest/Wind River Range. The road turned into dirt, with lots of pot holes, and we continued on for 19 miles (until it intersected WY28). We passed some beautiful alpine lakes and stunning mountain meadows. We got cut off at one point by an impulsive deer determined to cross the road in front of us(It almost ran into us)!  We also saw a large Blue Heron, and a fair number of camp sites where folks had pulled their RVs (16 day max stay) to boondock. 

Middle Popo Agie River

Entrance to the Sink

Description of the cavern

Exit from the sink and all the Trout


Frye Lake

Fiddler Lake


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