Egyptian crisis thwarts inventor Ng Tze-chuen's pyramid robot mission
The political crisis in Egypt has put on hold a plan to unlock the secret of the Great Pyramid of Giza. A key player in the elaborate project, Hong Kong dentist and inventor Dr Ng Tze-chuen, is holding out for the end of the trouble and the realisation of a longstanding dream.

The political crisis in Egypt has put on hold a plan to unlock the secret of the Great Pyramid of Giza.
A key player in the elaborate project, Hong Kong dentist and inventor Dr Ng Tze-chuen, is holding out for the end of the trouble and the realisation of a longstanding dream.
"I've been working on this for 11 years, even longer than Howard Carter, who discovered King Tutankhamun. We deserve to unlock the mystery of the second door," Ng says.
Mystery has surrounded the pyramid since British engineer Waynman Dixon discovered two small tunnels - a northern one and a southern one - in 1872. In 1993 a German engineer sent a small robot up the southern tunnel and discovered a door. Nine years later, another robot was sent in and discovered a secret chamber behind the first door. Ng was watching the National Geographic live broadcast and it caught his imagination.
He badgered the Egyptian Supreme Council of Antiquities until put in charge of pulling together a team for the project.
It's been a long journey. In 2011 success was achieved with a robot called Djedi, which took photos of hieroglyphics inside the narrow tunnel.