Synopsis

It was about the size of an ordinary tennis lawn at the top, and it was deep enough to contain a workman's cottage. It was a crater—a mine crater. Suddenly one morning the ground near by had shaken as if there was an earthquake; dugouts had rocked, candles and bottles had crashed wildly onto the cursing occupants lying on the floor, and IT had appeared. Up above, a great mass of earth and debris had gone towards heaven, and in the fullness of time descended again; a sap-head with its wooden frames had disappeared into small pieces; the sentry group of three men occupying it had done likewise.