Daspletosaurus lived in a vast floodplain along the western shore of the interior seaway.

The first European settlers had found the area almost impassable for many months of the year as the flatlands above the estuary become vast floodplains.

The peninsula is an extremely eroded, almost level, low plain with mighty meandering rivers and vast floodplains.

The plant was then well placed to take over the vast floodplains of the Adelaide River.

The basin is a vast floodplain, consisting of about 20 seasonal lakes, freshwater swamp forest and peat swamp forest.

The district is situated in a vast floodplain, between the Kilombero River in the south-east and the Udzungwa-Mountains in the north-west.

A program of draining the vast floodplains above the Peel-Harvey Estuary was instigated during the same period.

The area is a vast alluvial floodplain traversed by numerous rivers and streams flowing in south-easterly direction.

The local peoples know the area as Mardoowarra, the river and its vast floodplains are of great spiritual, cultural, medicinal and ecological significance.

Western Province, which is located on the border with West Papua, consists of raging rivers, steep mountain ranges up to 8,000m, vast floodplains and dense jungle.