Sighting and other observations along the Niobrara River

In fall 1974 the witness was bowhunting and driving along the Niobrara River when he stopped to check a ravine. He saw a tall coal-colored hairy creature about 40 to 50 feet away watching him for about two seconds before it turned and ran south up the ravine on two feet. He stayed parked a few minutes afterward and initially told no one.