We could not join the wires to the mains lest our secret should become known, but I have a cable here which we can attach in the hall and complete the circuit!" As he was speaking, he began to ascend the steps.

From close to the entrance he took the end of a cable; this he drew forward and attached to a switch in the wall.

Then, turning on a tap, he flooded the whole vault and staircase below with light.

I could now see from the volume of light streaming up into the hallway that the hole beside the staircase went direct into the cave.

Above it was a pulley and a mass of strong tackle with multiplying blocks of the Smeaton order.