The great building first noticed stands, or stood, on a pyramidal foundation, which is supported along the river by that high back wall. The structure extends 624 feet on the river line. Mr. Stephens described it as an “oblong inclosure,” and states that it has a wide terrace nearly 100 feet above the river, on which great trees are growing, some of them more than 20 feet in circumference. Here, as at Palenque, the ornamentation was “rich and abundant.” The ruins, greatly worn by decay, still show that “architecture, sculpture, painting, and all the arts that embellish life had flourished in this overgrown forest.” Some beautifully executed sculptures were found buried in the earth, and there can be no doubt that extensive excavation, if it were possible in that almost invincible forest, would lead to important and valuable discoveries. Besides the great building and the monoliths, several pyramidal structures are mentioned by Mr. Stephens, who points out that extensive exploration is impossible unless one shall first clear away the forest and burn up the trees. Palacios, who described this ruined city nearly three hundred years ago, saw much more than Mr. Stephens. He described “the ruins of superb edifices, built of hewn stone, which manifestly belonged to a large city.” He mentions, in connection with the great wall, an enormous eagle carved in stone, which bore a square shield on its breast covered with undecipherable characters. He mentions, also, a “stone giant,” and a “stone cross” with one arm broken. He saw a “plaza,” circular in form, surrounded by ranges of steps or seats, which reminded him of the Coliseum at Rome, “as many as eighty ranges still remaining in some places.” This “plaza” was “paved with beautiful stones, all square and well worked.” Six of the great obelisks, which he described as “statues,” stood in this inclosure, and in its centre was a great stone basin. A history of Guatemala, by a writer named Huarros, states that the “Circus of Copan,” as he calls the “plaza” described by Palacios, was still entire in the year 1700. He mentions gateways which led into the inclosure, and says it was surrounded on the outside by stone pyramids six yards high, near which were standing sculptured figures or obelisks. No doubt, remains of this remarkable “circus” would be found now, if the forest should be removed. What else could be found there by means of careful and thorough exploration may never be known, for the region is uninviting, the forest very difficult, and such an exploration would require much more than the means and efforts of one or two individuals.