Everything you need to understand or teach The Hammer of God by Arthur C. Clarke.
Brief expositions of two prior Earthmeteorite collisions ground the novel's main premise in historical reality: the Tunguska, Siberia impact of June 30, 1908, and prehistoric reality, an impact at Chicxulub on the Yucatan Peninsula of Mexico sixty-five million years ago.
A near miss is cited in the chapter "Oregon 1972." However, the specific location from which a tourist captured the passage of the meteor on film is said to be "Grand Teton National Park," which lies...