Twidale & Bourne: Geomorphology of The Humps, Hyden 
Acknowledgements: The authors thank the Hyden-Karlgarin and District 
Landcare group for facilitating their most recent work on The Humps 
and environs, and those several local enthusiasts, and notably Russel and 
Val Mouritz, who have actively promoted the natural features of the 
Hyden district for tourist and educational purposes. 
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