The land around Waterfall Gully provided the original inhabitants with a number of resources . The bark from the local stringybark trees ( Eucalyptus obliqua ) was used in the construction of winter huts , and stones and native timbers was used to form tools . Food was also present , and cossid moth larvae along with other species of plants and animals was collected . Nevertheless , there was only a few resources that could only be found on the slopes , and " both hunting and food gathering would in general have been easier on the rich plains " .