The Midwood Marshes was a lush, biodiverse wetland found close to the center of the Deepwoods. It was infamous for the constant, heavy rain that fell there. The Midwood Marshes was the location of the largest stand of sumpwoods in the entire Edgeworld, and the area was also home to a variety of unique creatures found nowhere else in the Edge, including ghost quarms and lanternjaws. The Midwood Decks was built in the area, and the region played host to the Battle of the Midwood Marshes during the events of The Immortals.