The swampland area of the United States exceeds 74,500,000 acres, or an amount greater than the area of the Philippine Islands by 1,000,000 acres.
"History of the United States, Volume 6 (of 6)"
E. Benjamin Andrews
Below them, the river was widening out to the point where it resembled swampland more than a waterway.
"Black Man's Burden"
Dallas McCord Reynolds
What balanced there now, as if walking the treacherous surface of the swampland, was no animal.
"Voodoo Planet"
Andrew North