One enduring frustration is that most of the Lydian city ruins lie under what archaeologists call an "overburden."

They are often referred to as Anasazi, as the Navajo guides who helped nineteenth-century anthropologists and archaeologists called them.

From his location at what archaeologists called the Roman House, he could see most of Petra.

It occupied the top floor of a three-storey building, with several levels of what spatial archaeologists call permeability between it and the world outside.

The Weishan site, as archaeologists are calling it, may spread over as much as 10,000 square feet, Archaeology magazine reported in its current issue.

The archaeologists called it a "natural blackboard" and determined that Nazca had been like this for tens of thousands of years.

This is what archaeologists call the first intermediate period.

Nonetheless, various archaeologists have called into question the defensive capacity of many hillforts.

This was when the Maya civilisation was at its height, during what archaeologists call the Classic period.

While Koldewey was convinced that he had found the gardens, some modern archaeologists have called his discovery into question.