An out-of-place artifact (OOPArt) is an artifact of historical, archaeological, or paleontological interest found in an unusual context, which challenges conventional historical chronology by its presence in that context.
This book will cover 10 OOPARTS. OOPARTS are challenging our views of history, science and established theories. If our history happened just as they say it did, then how are we to explain artifacts that are genuine but that do not fit in with the chronology or "timeline" that we have built?