This TalonSoft patches page has downloads of "Green Island" a new stand-alone scenario for Tropico that adds a new challenge to this tropical island dictator simulation from PopTop Software. They have actually posted a pair of scenarios for download, but the Mt. Sucio addition is actually already included in version 1.03 (both of the scenarios require the version 1.03 Tropico patch (story) be installed), so in reality you just need to install the Green Island scenario and the 1.03 patch (both on that same page) to get both additional scenarios.