Bronson Canyon, Movie filming location in Griffith Park, Los Angeles, US.

Bronson Canyon is a former quarry in the southwest section of Griffith Park in Los Angeles, California, reached from the north end of Canyon Drive. A vertical face of brown and tan earth and rock rises above a dark, roughly arched tunnel opening set right of center; the opening is wide with a rounded top, and its shadowed interior descends into blackness. Sparse green vegetation grows along the top edge and on the left slope beside the opening. The tunnel is short, passing through the hill rather than deep into it.

In 1903 the Union Rock Company opened a quarry here, first called Brush Canyon, digging crushed rock for Los Angeles street construction; an electric train on the Brush Canyon Line carried the stone out. The quarry closed in the late 1920s, leaving the tunnel and rock face that became known as Bronson Caves, after the nearby avenue and hill.

The name comes from nearby Bronson Avenue and a hill of that name, not from actor Charles Bronson, though the former Charles Buchinsky is believed to have taken his stage name in 1954 after seeing the street sign in Hollywood. The tunnel's best-known role is as the entrance to the Batcave in the 1966–68 Batman television series.

Bronson Canyon sits at the north end of Canyon Drive, an extension of Bronson Avenue, in the southwest part of Griffith Park. The quarry floor is a small V-shaped area with the tunnel at its middle apex, so the walk from the street to the opening is short. The tunnel is a short passage through the hill, and the rear opening is visible from a direct view.

The canyon is a small V-shaped area with the caves at its middle apex, yet a century of filming there has made audiences picture a wide mountain region. The main cave entrance is usually shot at an angle because the tunnel is very short and its rear opening shows in a direct view.