Rastus....the Bighorn at Thermopolis Wyoming is where I fished it...It goes underground and resurfaces just South of that Town,,,,the river flows thru and Indian Reservation...I don't recall which tribe...I think Shoshone....but My understanding that only a few acess and float permits are granted to the river in that area
the area North toward the town is open access and flows between the highway and the rail line...Phenix