From the Top at COBA in Belize. The highest point on the Yucatan Peninsula. Fascinating view of the region from a man made tower. The room at the top was no more than 3' wide but extended 9' high. I can not imagine someone falling from this height down the stairs as it was certain death. I climbed each step , however, I am sure that the Mayan had no rope to grab. One thing is for sure, you had to be in good shape to make this climb.

Masonry appears to be limestone with rough cut and stacked in a random order. The same with the stairs which had platforms on the side of the main staircase with areas, probably for small wood and thatched  enclosures.