Tests have started on a robot archaeologist due to be sent deep inside Egypt's largest pyramid, Cheops, to reveal secrets of the pyramid. A robot had been sent into Cheops in 2002 by Egyptian team in cooperation with a US university.

During the 2002 foray, three doors were discovered by robot archaeologist. When the robot first slipped through the pyramid's south passage, it encountered with a door with copper handles.

When the robot penetrated through a 1 cm hole at the door, a second door was found about 21 cm from the first door.

As the robot slipped through, it was blocked with a passage that ends with a small door with copper handles.

The new one will be carried out by a team from Singapore and a joint group from Britain and Hong Kong. A makeshift milestone-built passage was specially designed to carry out the tests.