Shot while strolling down on 12th St., Denver, CO, April 24th,
2010. A blog reviewing recent archaeological publications having
to do with Paleolithic archaeology, paleoanthropology, lithic
technology, hunter-gatherers and archaeological theory. The
structure is a stone wall that blocked two-thirds of the
entrance to the Theopetra cave near Kalambaka on the north edge
of the Thessalian plain. It was constructed 23,000 years ago,
probably as a barrier to cold winds. “An optical dating test,
known as Optically Stimulated Luminescence, was applied on
quartz grains nested within the stones. We dated four different
samples from the sediment and soil materials, and all provided
identical dates,” Nikolaos Zacharias, director of the laboratory
of archaeometry at the University of Peloponnese, told Discovery
News.