'Big void' identified in Khufu's Great Pyramid at Giza
The mysteries of the pyramids have deepened with the discovery of what appears to be a giant void within the Khufu, or Cheops, monument in Egypt.
It is not known why the cavity exists or indeed if it holds anything of value because it is not obviously accessible.
The question now arises as to how the void should be investigated further.
Jean-Baptiste Mouret, from the French national institute for computer science and applied mathematics (Inria), said the team had an idea how to do it, but that the Egyptian authorities would first have to approve it.
"Our concept is to drill a very small hole to potentially explore monuments like this. We aim to have a robot that could fit in a 3cm hole. Basically, we're working on flying robots," he said.