sentences:  The site is managed by the Bureau of Land Management as part of the Red Gulch/Alkali National Back Country Byway and is open to the public.The fossilized tracks are believed to have been made during the Middle Jurassic Period, 160-180 million years b.p., on what was then a shore of the Sundance Sea.Theropod tracks are thought to be among those discovered, but evidence suggests that the tracks were made by a large, diverse group of dinosaurs.