Max flat speed: 8.18km/h
marsh is a form of vegetation similar to grass found close to or under water that; however, it's uses are more restricted.
Marsh can spread naturally.
Digging marsh with a shovel does not convert it into dirt as it does with grass. It can only be reclaimed by paving with floor boards, it may then be safely unpaved to be used as dirt or allow repaving with another paving type.