Professor Rafinesque contends, with much assurance, that he has found, beside the name of the city, the true key to all the extraordinary hieroglyphics to be seen there. Its real name, according to this antiquarian, was _Otulum_, from the name of the river washing the borders of the city. From Palenque, the last town northward in the province of Chiapa, says Del Rio, taking a southerly course, and ascending a ridge of high land that divides the kingdom of Guatemala from Yucatan or Campeachy, at the distance of six miles, is the little river _Micol_, the waters of which, flowing in an easterly direction, unite with the great Tulija, bending toward Tobasco. After passing the Micol, the ascent begins, and at one-and-a-half miles from them, the traveller crosses another stream, called by the natives, 'Otulum,' which discharges itself also into the Tulija. Immense heaps of ruins are here discovered, in every direction, which render the travelling very difficult for nearly two miles! At length you gain the height on which yet stand fourteen massive stone buildings, still indicating the condition in which they were left by the people who, at some remote age, dwelt within them. These, astonishing as it must seem, have withstood the ravages of time for thousands of years; and now present to the curious a character unlike that of any structures which have come down to the present period of the world. Some are more dilapidated than others; yet many of their apartments are in good condition. It was impossible for the enthusiastic explorer to proceed to an examination even of the exterior of these singular buildings, until the thick and heavy forest trees, the piles of crumbling fragments, and the superimposing earth, had been removed. Two hundred men were therefore obtained among the natives, who, with various implements, proceeded to the laborious work of removing the many obstructions upon, and immediately surrounding, the remaining buildings. All the means necessary to the execution of this difficult part of the enterprise could not be made available. In about twenty days, however, the task of felling the forest trees, and of consuming them by fire, was accomplished. Some of these trees, according to Waldrick, who has since distinctly counted their concentric circles, were more than _nine hundred years of age_! The workmen now breathed a freer air, and viewed the massive structures, disencumbered of the dense foliage which had enveloped them. From the summit of the mountain, forming a ridge to the plain, these buildings were presented at its base, in a rectangular area, three hundred yards in breadth, by four hundred and fifty in length, in the centre of which, on a mound sixty feet in height, stood the largest and most notable of these edifices. During a part of the time employed in prosecuting the work, a thick fog pervaded the plain. This may have arisen from the retention and condensation of vaporous clouds in this region,