Researchers in 2008 were sent to investigate a lost ancient Egyptian labyrinth 55 miles south of Cairo that was described in many classic books by authors such as Herodotus and Strabo.
From Humans Are Free:
The legendary temple was said to contain 3000 rooms full of hieroglyphs and paintings.
The Belgian-Egyptian expedition team brought the highest level of ground penetrating technology to scan the sand of Hawara and solve the enigma.
The Mataha expedition (Mataha = labyrinth in Arabic) confirmed the presence of the underground temple just south of the pyramid of Amenemhat III.
Details of the expedition:
The labyrinth of Egypt reconstructed: