campagna

from The Collaborative International Dictionary of English v.0.48

Campagna \Cam*pa"gna\ (c[.a]m*p[aum]"ny[.a]), n. [It. See
   {Campaign}.]
   An open level tract of country; especially "Campagna di
   Roma." The extensive undulating plain which surrounds Rome.
   [1913 Webster]

   Note: Its length is commonly stated to be about ninety miles,
         and its breadth from twenty-seven to forty miles. The
         ground is almost entirely volcanic, and vapors which
         arise from the district produce malaria.
         [1913 Webster]