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.

The tomb of Thutmose II, who ruled about 3,500 years ago, was discovered by an Egyptian-British team near the Valley of the Kings.

But that doesn’t make the discovery of his final resting place any less important. On February 18, the Egyptian government announced that an international team of archeologists have finally confirmed the tomb’s location—making it the first and most significant royal find since the identification of King Tutankhamun’s tomb in 1922.