Locality of the Golden Spike of the Ediacaran Period, showing the contact between diamictite of the Elatina Formation and the dolomite of the Nuccaleena Formation. Pictures also shows sampleing holes. Trezona Loop walk, Brachina. Location: Wilpena Chalet, South Australia, Australia, (138.63342, -31.33156). For more information see www.ausgeol.org