"Found it!"
The voice suddenly came through the walkie-talkie.
Yang Chen immediately turned around and looked at the surveillance screen.
They surrounded the main tomb chamber's coffin and looked inside.
Through the surveillance screen, Yang Chen saw that there was a layer of plywood under the coffin. After moving the body aside, the plywood could be opened, revealing a deep, dark cave that seemed bottomless.
Yang Chen asked, "How deep is it?"
"Still measuring!"
A guard tied a rock to a rope and slowly lowered it down.
The rope was five hundred meters long, but even after it was fully lowered, it still hadn't reached the bottom.
The guard retrieved the rope, and there were no marks on it, indicating it hadn't touched the bottom.
With a depth exceeding five hundred meters, using a rope for measurement was no longer feasible.
Yang Cao sent for a radar detector to use radar to accurately map the cave's depth.
The power of technology is immense.
