Discover Tanis the lost city burried under the dessert

The first study of Tanis dates to 1798 during Napoleon Bonaparte's expedition to Egypt. 

Engineer Pierre Jacotin drew up a map of the site in the Description de l'Égypte. 

It was first excavated in 1825 by Jean-Jacques Rifaud, who discovered the two pink granite sphinxes now in the Musée du Louvre,

and then by François Auguste Ferdinand Mariette between 1860 and 1864, and subsequently by William Matthew Flinders Petrie from 1883 to 1886.[clarification needed] 

The work was taken over by Pierre Montet from 1929 to 1956, who discovered the royal necropolis dating to the Third Intermediate Period in 1939. 

In 1939, his eleventh year as the leader of the French archeological team, Montet finally made a great discovery. He found the royal necropolis of the Twenty-first and Twenty-second Dynasty of Egypt—the finds there almost equaled that of Tutankhamun's tomb in the Valley of the Kings. On February 27, he discovered a tomb of a king, identified by inscriptions as Osorkon II. The tomb and its accompanying rooms were already plundered, but Montet managed to uncover a sarcophagus of Osorkon’s son, prince Takelot II. The tomb contained a gold bracelet of Osorkon, as well as a heart scarab, alabaster jars, and other items.

Osorkon    III

Usermaatre Setepenamun Osorkon III Si-Ese was Pharaoh of Egypt in the 8th Century BC. He is the same person as the Crown Prince and High Priest of Amun Osorkon B, son of Takelot II by his Great Royal Wife Karomama II

In the 1939–1940 Egypt excavation season, he discovered the completely-intact tombs of three Egyptian pharaohs at Tanis: Psusennes I, Amenemope, and Shoshenq II along with the partially plundered tomb of Takelot I. The latter tomb contained a gold bracelet of Osorkon I, Takelot's father, as well as a heart scarab. He also found the fully plundered tomb of Osorkon II as well as the partly plundered tomb of this king's son, Prince Hornakht. The start of World War II in Western Europe in May 1940 stopped all excavation work at Tanis. However, after the war, Montet resumed his activities at Tanis and proceeded to uncover the intact tomb of General Wendjebauendjed

In the 1981 Indiana Jones film Raiders of the Lost Ark, Tanis is fictitiously portrayed as a lost city which was buried in antiquity by a massive sandstorm, before being rediscovered by a Nazi expedition looking for the Ark of the Covenant