As the companion says, it is an island in the Aegean Sea located between Crete and the Peloponnese peninsula. They also name a strange ancient bronze artifact that Indiana Jones calls Archimedes' dial, found by divers in the early 20th century among the remains of a shipwreck off this island.
ANTIKYTHER Greek island of 20 kms2, located south of the Peloponnese and northwest of Crete. It is known for the Antikythera mechanism, which was found in Greece (in 1901), among the remains of a shipwreck from Roman times. It is a third of a system of 30 bronze gears like that of watches, which is activated manually and has some inscriptions on its surface