It is located at 54°20′S 71°30′W / 54.333°S 71.500°W / -54.333; -71.500[1] and extends 40 miles (64 km) east from the open Pacific Ocean to Magdalena Channel.

Cockburn Channel and the Bárbara Channel have the same entrance into the Pacific, but it runs in an easterly direction along the south side of Clarence Island for 40 miles and into Magdalen Sound in Magellan Strait.

Two rocks are plainly visible above water in the entrance to Cockburn Channel.

The other lies northeastward of Tussac Rocks, about 7.5 miles 171° from Mount Skyring.

This Magallanes and Antártica Chilena Region location article is a stub.