An curved arrow pointing right. The trenching machine is used to lay down water pipes and fibre optic cable. It can dig holes up to 5.5 metres deep and 1.5 metres wide. Produced by Jasper Pickering.

China has built the world’s first machine capable of laying submarine cables in the Challenger Deep, the deepest known place on Earth. Positioned at the southern end of the Mariana Trench in the ...