I seized hold of Jack, to drag him away, lest he should be crushed by the fragments of rock.

At that moment another stone fell, and we saw two heads appear through the opening,--the heads of Fritz and Ernest.

Judge of our surprise and joy! Jack was soon through the opening, and assisting his brothers to enlarge it.

As soon as I could enter, I stepped in, and found myself in a real grotto, of a round form, with a vaulted roof, divided by a narrow crevice, which admitted the light and air.

It was, however, better lighted by two large gourd lamps.