Reflections of the cliffs on the water. PORCUPINE GORGE NATIONAL PARK. Known as Australia’s “Little Grand Canyon”, with its cool, clear, flowing creek, towering cliffs of vibrantly coloured sandstone and comparatively dense vegetation provides a striking contrast to the sparsely wooded, dry flat plains, which surround it. This impressive canyon reveals strata of sedimentary rocks spanning hundreds of millions of years of geological history.