The caves that the girls drive past on the way to Willis Canyon are the back entrances to Bronson Cave, better know as the Batcave in 1960's TV series Batman (1989).
Shot under the title "Dark Side of Nowhere."
Nicole Gale Anderson and Linden Ashby later starred in Mean Girls 2 (2011).
Barbara Niven and Linden Ashby both starred in the 2008 movie Dead at 17.