Sycamore Canyon Channel

The Sycamore Canyon Channel is a large, concrete box style storm drain in Los Angeles starting by the LA River.

It is notable for having multiple open channels as it transitions Glassell Park to Glendale via Forest Lawn Memorial.

History
The Sycamore Canyon Channel tunnels were once used as tunnels for moving drugs, weapons, and people by the Drew Street Avenues gang.

Because of the open channels in close proximity to neighborhoods the Avenues control, the tunnels provide a direct underground route to the LA river.

You can find graffiti from the height of the Avenue's power, often showing a fedora-wearing skull, the words "AVES," and hands making the shape of an A.