A man with a metal detector just found a massive stash of Viking treasure

A gardener in Finland stumbled upon over 4,000 silver coins buried in his own backyard.

You never know what is hiding under your feet. A man in a small Finnish village was out using his metal detector when he made a discovery that is making history. He found over 4,000 silver coins from the Viking Age buried in his backyard. The coins were stored inside two containers made of birch bark. These containers were buried about 39 feet apart from each other. Experts are calling this a "double hoard," which is a fancy way of saying it is a collection of treasure that is very rare and unlike anything they have seen before. Finding this much silver is a big deal. The haul weighs about…