Mountain range in Northern Territory, central Australia, running east to west in parallel ridges for 644 km/400 mi. The highest peaks are Mount Liebig (1,524m/5,000 ft) and Mount Zeil (1,510 m/4,955 ft). The town of Alice Springs is situated in the middle of the Macdonnell Ranges. The spectacular scenery, with its deep gorges and red rocks, attracts many tourists.
The disc represents the full moon, traditionally the most auspicious time for work and celebration. The disc is set towards the hoist. Effective date: 1 January 1981.