The abbé then showed Dantès the sketch he had made for their escape. It consisted of a plan of his own cell and that of Dantès, with the passage which united them. In this passage he proposed to drive a level as they do in mines; this level would bring the two prisoners immediately beneath the gallery where the sentry kept watch; once there, a large excavation would be made, and one of the flagstones with which the gallery was paved be so completely loosened that at the desired moment it would give way beneath the feet of the soldier, who, stunned by his fall, would be immediately bound and gagged by Dantès before he had power to offer any resistance. The prisoners were then to make their way through one of the gallery windows, and to let themselves down from the outer walls by means of the abbé’s ladder of cords.