In 2016 two tourists found engraved petroglyphs on a Hawaiian Beach. This was an important find because it suggested that the ancient Polynesians had a common writing system which was used from...
The Roman quarry of El Mèdol , located in modern-day Tarragona (Tarraco in ancient times) in Catalonia is literally a man-made marvel. This limestone quarry was used by the Romans to build the city...