view of echo point blue mountains three sisters katoomba sydney nsw australia

mountain rock terrain nature cliff landscape sky tree wilderness cloud hill reflection coast geology autumn plateau formation sea morning view echo point blue mountains three sisters katoomba sydney nsw australia adventure aerial view attraction australia australian beautiful mountains bush bush walking bushland canyon cliff conservation point eco system ecosystem environment famous flora foliage forest gorge gulleys hills houses iconic katoomba landscape mountain national park nature nsw outback rural sandstone scenic scenic sisters sydney three tourism tourist travel trees valley village world heritage