The 100 m false-colour image of 21 March 2015 shows us the Flinders Ranges, the largest mountain range in South Australia, which starts about 200 km north of Adelaide. The discontinuous ranges stretch for over 430 km from Port Pirie to Lake Callabonna. Its most characteristic landmark is Wilpena Pound, a large, sickle-shaped, natural amphitheatre that covers 80 km² and contains the range's highest peak, St Mary Peak - 1,171 m that adjoins the Ikara-Flinders Ranges National Park. The northern ranges are protected by the Arkaroola Protection Area and the Vulkathunha-Gammon Ranges National Park. The southern ranges are notable for the Pichi Richi scenic railway and Mount Remarkable National Park. Lake Torrens (an ephemeral salt lake) is visible at the left of the image, at the right Lake Frome, an endorheic lake.