Image: A tall gum tree stands near the bank of a river, which is visible in the distant background. The trunk of the tree is adorned with several small signs showing the year in which a major flood occurred and its water level height
The heights of floods on the River Murray recorded on ‘The Tree of Knowledge’ at Loxton
Courtesy of/Photographer: 
Loxton News
Citation: 

Image courtesy of C.R. Twidale. Not to be reproduced without permission