
For Europeans dating as far back as the Neolithic period 6,000 years ago, bogs were both resources and possibly ominous supernatural portals, according to Ulla Mannering, an expert in ancient textiles at the National Museum of Denmark.
Over 500 Iron Age bog bodies and skeletons dating to between 800 B.C. and A.D. 200 have been discovered in Denmark alone, with more unearthed in Germany, the Netherlands, the United Kingdom, and Ireland.