Mount Lofty (34°58′S 138°42′E, elevation 727 metres AHD) is the highest point in the southern Mount Lofty Ranges. It is located about 15 km east of the centre of the city of Adelaide in South Australia and gives unrivalled panoramic views of the city and the Adelaide plains and foothills. It was first climbed by a European when explorer Collet Barker climbed it in April 1831, almost seven years before Adelaide was settled. It was named by Matthew Flinders on his circumnavigation of Australia in 1802. The Summit was closed to the public during World War 2, when the obelisk was considered an indispensable navigation assistant. A flashing strobe was fitted to the top to improve visibility at night. This strobe was removed after the war, but then re-installed in the 1990s, when the obelisk was repainted and restored during construction of the new kiosk. Access to the summit can be gained by road from the South Eastern Freeway at Crafers, or from the eastern suburbs via Greenhill Road. The more enthusiastic can walk up the gully from Waterfall Gully, in the Cleland Conservation Park or from Chambers Gully