"WELCOME to the STONE AGE" - a new book for the curious of all ages

  OTSF is a United States of America not-for-profit 501(c)(3) foundation.  We have worked for more than 30 years with an international array of multi-disciplinary researchers & university instructors including, but not limited to: The University of Malta, Heritage Malta, The German Archaeological Institute, Turkish Ministry of Tourism and Culture, Instituto Terra e Memória, Centre of Geosciences, Portugal, University of Huddersfield, UK, University of the Highlands and Islands ​Archaeology Institute, Scotland, UNESCO, ICOMOS, The American Anthropological Association, The Archaeological Institute of America