. . . "Egypt"@en . . "Monument of Depression is the second mission from Metal Slug 2 and X. It is the debut of the mummies."@en . "Monument of Depression is the second mission from Metal Slug 2 and X. It is the debut of the mummies."@en . "Monument of Depression"@en . "The Cenotaph"@en . "Monument of Depression"@en . . "Bats"@en . . "Prehistoric Site"@en .