My husband Michael Cook who is a landscape gardener specialising in natural features and Australian native plants, designed and built the features seen in  this garden in Montrose. 

He, along with workers and sub-contractors,  built these features  in 2008. It has mellowed with further growth. Hence the results as seen in the photos.

We visited the garden yesterday long with members of his group Australian Plant Society, Maroondah. He is the president.