The existing ruins consist of pyramidal structures and terraces, but apparently without any relics of buildings crowning them. The chief ruin is that which Stephens calls the temple. It is an oblong enclosure, the river-wall of which is no less than 624 feet long and varies in height from 60 to 90 feet. It is built of cut stones from 3 to 6 feet in length and 1 1/2 broad. The other three sides of this enclosure consist of ranges of steps and pyramidal structures varying in height, measured on the slope, from 30 to 140 feet. Near the south-west corner of the river-wall Stephens found a recess which he suggests was once occupied by a colossal monument fronting the water. Beyond are the remains of two small pyramids between which he found traces of a gateway, probably the chief entrance to the city on the riverside. The south side of the enclosure has in its eastern corner a huge pyramid 120 feet high on the slope. To the right of this are other terraces and pyramids with what was probably a gateway into a quadrangle 250 feet square. Here Stephens found many sculptured stones, notable among these a series of gigantic sculptured heads ranged in rows half-way up the side of one of the pyramids. These he took to be death's-heads, but he afterwards reconsidered this decision and suggested that they were intended for apes' heads. For this view he found corroboration in the remains of a colossal ape carved in stone which lay fallen near by, and which certainly seems to suggest that the early occupants of Copan may have reckoned a monkey deity in their mythology. Remarkable, too, was the carving of a head and bust which appears to be a distinct effort at portraiture. Facing eastward, 6 feet from the pyramid base, he found the first of those many stelae, the upright stones which give Copan its special interest in the Mayan controversy. We here reproduce his representation of it. It is 13 feet high, 4 feet wide, and 3 feet deep, and is sculptured on all four sides from base to summit. It had originally been coloured, the red paint still adhering in places. Some 8 feet away there was a large block of sculptured stone, easily identifiable as an altar. On it was carved, in the front, a full-length figure; on the sides are hieroglyphics. These stelae and altars are the peculiar features of the Copan ruins. Nothing like them has been discovered so far in Yucatan, and from them it is possible to draw certain deductions, as we shall endeavour to do later. A little further on, Stephens found another stela of the same size. The eastern side of the enclosure consists of an almost continuous pyramid-shaped structure, broken here and there by isolated pyramids. At right angles to it, a confused range of terraces, ornamented with death's-heads, branch off into the forest. This plan of building appears to have continued throughout the north side till the river-wall was again reached.