In the 1930s when Chichen Itza, which dates back to the 6th century, was being unearthed in the 1930s they discovered a pyramid inside of it. Researchers discovered a second pyramid inside last year via some high-tech tools, found below the first one, and indicates that near the center of the structure is a ramp and an altar.
What you see is about as good/bad as it got. Stag magazines like this 1961 title from Parliament always skated the line because they lived in fear of obscenity charges into the mid-1970s. They would tell the grittiest stories without swearwords, and illustrate the sexiest sex stories with minimal nudity (all busts and not much below the waist, black bars across the eyes).