Wall of Silver - The Lost Mine 

Who can resist a story about a lost mine? King Solomon’s Mine in Africa, the Lost Dutchman’s Mine in Arizona, and The Wall of Silver in Michigan. They all have a story. Historically, Michigan had vast iron ore and copper deposits in its Upper Peninsula. Gold and silver were also found there, but no mother loads were found in Michigan. Richard Kellogg says he has seen a wall of pure silver at least 90 feet long in a mine in the Keweenaw peninsula of Michigan.