A long lost tomb of an Egyptian pharaoh has been found, the country’s antiquities ministry said Tuesday, answering a great mystery of one of ancient Egypt’s most prosperous eras.

Archaeologists have found the long-lost tomb of King Thutmose II, helping shed more light on ancient Egypt at its peak.

Thutmose II was the fourth ruler of the illustrious ancient Egyptian 18th dynasty, which included Tutankhamun. Now, the location of his long-lost tomb, one of the last missing royal tombs, has been confirmed by the New Kingdom Research Foundation, a British-Egyptian archaeological team led by Piers Litherland.