Long known as a bastion of discrete, secure banking, Switzerland will soon offer the world’s wealthy another choice for storing their prized possessions: rock vaults carved into foothills of the Alps. The idea comes from entrepreneurs in central Switzerland, home of the Bruenig massif, a hulking mountain about 25 miles southwest of Lucerne. “Your treasure chamber in a solid rock massif,” Bruenig Mega Safe AG, the firm building the vaults, says on its website. “The secure place for safekeeping your assets and sensitive data.” The company plans to use an expanse within the mountain equivalent to about 10 soccer fields, ... (full story)