The darkness, always deep twenty yards before us, prevented us from estimating the length of the gallery; and I was beginning to think it must be endless, when suddenly at six o'clock a wall very unexpectedly stood before us. Right or left, top or bottom, there was no road farther; we were at the end of a blind alley.
Les ténèbres, toujours profondes à vingt pas, empêchaient d'estimer la longueur de la galerie, et je commençai à la croire interminable, quand soudain, à six heures, un mur se présenta inopinément à nous.