Prehistory is the period of time which encompasses all of history which occurred before the invention of writing.
Regular Blogs
This blogger, a seven-year old who says he like dinosaurs and arthropods, writes about all sorts of prehistoric topics and accompanies the writings with photographs, illustrations, and video to enhance the readings.
http://www.lifebeforethedinosaurs.com/
Prehistoric Archaeology in Europe
Shares current news and events regarding archaeological items in Europe, including entries about rock art, barrow, and archaeological finds.
http://prehistoricarch.blogspot.com/
Theoretical Structural Archaeology
Maintained by a field archaeologist, this weblog contains entries which express how he sees the ancient world, in particular the archaeology of southern England's ancient lost timber-built environment.
http://structuralarchaeology.blogspot.com/
