two o'clock in the morning
The _ Carpathians _ were therefore pretty nearly in the same condition as the crater mountains _ Ptolemy _ , _ Alpetragius _ and _ Arzachel _ would find themselves in , if some terrible cataclysm , by tearing away their eastern ramparts , had turned them into a chain of mountains whose towering cliffs would nod threateningly over the western shores of _ Mare Nubium _ . The mean height of the _ Carpathians _ is about 6,000 feet , the altitude of certain points in the Pyrenees such as the _ Port of Pineda _ , or _ Roland 's Breach _ , in the shadow of _ Mont Perdu _ . The northern slopes of the _ Carpathians _ sink rapidly towards the shores of the vast _ Mare Imbrium _ . Towards two o'clock in the morning , Barbican calculated the Projectile to be on the 20th northern parallel , and therefore almost immediately over the little ring mountain called _ Pytheas _ , about 4600 feet in height . The distance of the travellers from the Moon at this point could not be more than about 750 miles , reduced to about 7 by means of their excellent telescopes . _ Mare Imbrium _ , the Sea of Rains here revealed itself in all its vastness to the eyes of the travellers , though it must be acknowledged that the immense depression so called , did not afford them a very clear idea regarding its exact boundaries . Right ahead of them rose _ Lambert _ about a mile in height ; and further on , more to the left , in the direction of _ Oceanus Procellarum _ , _ Euler _ revealed itself by its glittering radiations .