Limestone Coast
Much of the Limestone Coast region is low-lying, and was inundated by sea as recently as 2 million years ago. It had previously also been flooded 15–20 million years ago. There are deep limestone deposits created form the coral and other sealife. The limestone in the Naracoorte Caves contains fossils from these times. The plains are lined by rows of low sandhills parallel to the coast, created at times when the coastline was at that level. Prior to white settlement, much of the land between the sandhills was swampy and subject to inundation. A network of drains totalling 1450 km has been constructed to channel the water away through the sandhills to the ocean.
The major industries of the region include farming, viticulture, forestry and tourism.