{74} All of these precipices, not less than those on the Ohio, betray palpable indication of having once been swept by the stream; and the fantastic excavations and cavernous fissures which their bold escarpments expose would indicate a current far more furious and headstrong than that, resistless though it be, which now rolls at their base. The idea receives confirmation from the circumstance that opposite extends the broad American Bottom, whose alluvial character is undisputed. This tract once constituted our western border, whence the name. The bluffs of Selma and Herculaneum are distinguished for their beauty and grandeur, not less than for the practical utility to which they have been made subservient. Both places are great depositories of lead from the mines of the interior, and all along their cliffs, for miles, upon every eligible point, are erected tall towers for the manufacture of shot. Their appearance in distant view is singularly picturesque, perched lightly upon the pinnacles of towering cliffs, beetling over the flood, which rushes along two hundred feet below. Some of these shot manufactories have been in operation {75} for nearly thirty years.[66] Herculaneum has long been celebrated for those in her vicinity. The situation of the town is the mouth of Joachim Creek; and the singular gap at this point has been aptly compared to an enormous door, thrown open in the cliffs for the passage of its waters. A few miles west of this village is said to exist a great natural curiosity, in shape of a huge rock of limestone, some hundred feet in length, and about fifty feet high. This rock is completely honeycombed with perforations, and has the appearance of having been pierced by the mytilus or some other marine insect.