Flinders Island, the largest of the three large islands (Cape Barren is second in size and then Clarke Island) in this view, is located off the northeast tip of Tasmania in the Furneaux Group of islands. Fishing, grazing, and tourism are the leading economic activities of Flinders Island. Geologically the low granite mountainous terrain on these islands, with elevations ranging from less than 1000 feet (305 meters) to slightly over 2500 feet (760 meters) above sea level, are a southern extension of the mountains in southeastern Australia (eastern Victoria). The highest peak (2550 feet—780 meters) on Flinders Island is located in Strzelecki National Park at the southwestern end of the island (dark, vegetated feature). Mountainous terrain can be identified on the picture as the area where the darker, greenish-looking forested areas occur. Many white, sandy beaches, especially on the east side of Flinders Island, are visible in this picture. The islands are also havens for a variety of sea birds.