What’s the concrete tower that projects above the surface of the water at the edge of the reef at Seal Cove?
This storm-battered bastion is a relic of World War II, during which the Navy built Half Moon Bay Airport. From the airport, the Navy flew aircraft that towed targets used for gunnery practice by anti-aircraft guns situated in Montara!
When target practice was scheduled, a red flag was hoisted over the marker in Seal Cove as a warning to other aircraft and commercial fishermen in the area.
Today, the concrete sentinel functions as a roosting shelter for gulls and cormorants.