You've suddenly time traveled thousands of years into the past. The world around you looks wild and unfamiliar. The humans you encounter can't understand a word you say. Now they're running at you carrying stone tools Do you have what it takes to survive in the Stone Age? Turn the pages to find out
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.