gum trees, ikara-flinders` ranges national park, sa, australia

angiosperm angophora arid australia australian bark blue boulder brachina branch cliff corymbia day dirt environment eucalypt eucalyptus evergreen flinders forest geological geology gorge green gum gumtree heysen ikara landscape layers mawson mountain mountains national natural nature outdoor outdoors park ranges rock sand scenic sediment semi sky smooth south stone sunny trail travel tree trees view white woody