Part of the fun of running trails is the challenge of overcoming obstacles that may block your progress. These can range from fallen trees and swollen streams, to rattlesnakes and rockslides -- or as was the case yesterday on Lasky Mesa in Upper Las Virgenes Canyon Open Space Preserve, the occasional stray truck.

The truck was part of a assemblage of vehicles associated with a production company. The Ahmanson Ranch area is favored for film production, and classics such as Gone with the Wind, They Died With Their Boots On, The Charge of the Light Brigade, The Thundering Herd, and Duel in the Sun were filmed here. More recently, the bridge scene in Mission Impossible III was shot here.