The darkness hampered him greatly, for he would not let Lina come close enough to give him all the light she could, lest he should strike her.

So he had, every now and then, to feel with his hands to know how he was getting on, and to discover in what direction to strike: the exact spot was a mere imagination.
He was getting very tired and hungry, and beginning to lose heart a little, when out of the ground, as if he had struck a spring of it, burst a dull, gleamy, lead-coloured light, and the next moment he heard a hollow splash and echo.

A piece of rock had fallen out of the floor, and dropped into water beneath.

Already Lina, who had been lying a few yards off all the time he worked, was on her feet and peering through the hole.

Curdie got down on his hands and knees, and looked.