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Reading Prehistoric Human Tracks
Springer International Publishing
RT @MU_Peter: Prehistoric Human Tracks in Ojo Guareña Cave System (Burgos, Spain): The Sala and Galerías de las Huellas https://t.co/esswOC…
RT @DigMonkeys: The human footprints of Ojo Guareña, Spain - between 4200 and 4600 years ago about ten individuals exploring the caves left…