A California couple out walking their dog have stumbled across rare, mint-condition gold coins said to be worth up to US$10m, _1_ in the ground. The 1,427 coins, which date from 1847-1894, were never in public use.
The unnamed couple found coins buried in the shadow of an old tree on their _2_ in Gold County. The couple had been walking their dog when they came across a _3_ metal can sticking out of the ground and dug it out.
It is the greatest buried _4_ ever unearthed in the United States.
It is not known who buried the coins, but it seems clear that they probably _5_ to someone involved in the California gold rush, which began in the 1840s after gold was found in the Sierra Nevada _6_.
Now choose the correct missing five words:
