We scrambled over jagged rocks that lined the mouth of the cave, and stepped into darkness. The craggy entrance gave way to an inky chamber, one with a padlocked metal door. It blocked access to a ...

A remarkable map created in space over 50 years ago could lead a modern-day explorer to the sites of treasure-laden shipwrecks in the Bahamas. The space treasure map was put together in the 1960s by ...