In 2013, a married couple found hidden treasure while walking their dog in their own backyard. They saw a rusty box sticking out from the ground and found gold coins inside. Eight more boxes were dug up, full of coins minted from 1847 to 1894. The nominal value was $27,980.

The coins were perfectly preserved, and some of them were apparently never used. The couple sold most of the coins at auction.

No one knows how those boxes happened to be in their backyard. The find was nicknamed "Saddle Ridge Hoard," and its total value is about $10 million.