marshland

The land loss continues; every 50 minutes, a football field–size chunk of marshland melts into the sea.

The adventurers' "fort" presented a semicircle, the horns resting on marshland and on an inaccessible ravine respectively.

They have searched the woods, and the marshland, and the roadways.

Presently we dropped into the marshland at the base of the hill, and lost all save the red glare in the sky above us.