It's been warning ships off this hazardous point since 1855.

Why would the area need to be mapped if an operational lighthouse is already here to warn ships of danger?

Yemen on Monday warned all foreign aircraft and ships to stay out of the country's southern war zone.

The north has since warned foreign ships and planes to avoid southern "war zones."

The center warned ships and people in affected areas to be careful urging authorities to take full precautions.

"We could set up buoys just outside the system, warning passing ships," she suggested.

But it might be wise to warn other ships in the area.

Radio was used to warn shore stations and ships of danger.

And at the top is a little room for the lamp that used to flash to warn ships away.

The light was established in 1848 to warn ships of the dangerous shoals that lie off its coast.