The 600 million years old 30 Gibeon Meteorites mounted on steel columns in Post Str Mall are extraterrestrial (originating in space). Between 1911 and 1913, Dr. Paul Range, the State Geologists for the Government of German SWA, collected 37 meteor fragments in the Gibeon area. Their weight ranged between 195-506 kg. Two were stolen and four were donated to various institutions for research purposes. Since the installation of the meteorite fountain, another meteorite has disappeared.All pieces are thought to be part of one large ore, with a mass of over 17 tonnes, which fragmented long before it entered the atmosphere. The Meteorites were proclaimed a National Monument on 15 February 1950.