This is the first time Ive ever heard anyone claiming to spot Bigfoot in the high plains. Most sightings, hoaxes and fakes included, occur in woody,
mountainous areas like the Rockies and the west coast anyway.

RAPID CITY, S.D. (AP) -- Ignore the reports -- the South Dakota School of Mines and Technology said it does not have the body of the legendary Bigfoot.
An Internet site "reported" that one of the mythological creatures had been shot near Slim Buttes on the Pine Ridge Indian Reservation and that the body was taken to a School of Mines laboratory for studies.
The school has $14 million in research projects under way, but "no facilities dedicated to Bigfoot or other cryptozoology research," the School of Mines and Technology said in a statement.
The body of Bigfoot was supposedly seen and given a ceremonial treatment by three Lakota elders, including Wilmer Mesteth.
"Tell them it's a bunch of baloney," Mesteth said. "I think someone is playing a practical joke."