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Vegetation throughout the park varies substantially. There is a striking transition of vegetation following a rainfall gradient from south to north. Dry stringybark-Box forests near the gorge mouth and Box-Ironbark woodlands along the high ridges of the south, grade into taller, damper Messmate-Peppermint- Gum forests along the northern boundary along the northern boundary of the park. Along the river beds are Blue Gums and Manna Gums; grevilleas, wattles and hakeas cover the cliffs. Late winter and spring is the best time to see this shrubbery in bloom as well as spectacular displays of wildflower.
This park is important for wildlife. Koalas live in the manna gums. Eastern Grey Kangaroos, Swamp Wallabies and Spiny Ant-eaters are also about during the day. Nocturnal animals include the Greater Glider, Bobuck (or Mountain Brushtail Possum), Bent wing Bat and Powerful Owl.
There are wonderful birdwatching opportunities. Sulphur-crested Cockatoos nest in the gorge and fly out to feed in the open grasslands. They are sometimes preyed on by the area's most spectacular predator, the Wedge-tailed Eagle which nests in tall trees in the side gulleys. Other birds to be seen are the White-naped Honeyeaters, White-throated Treecreepers, Crimson Rosellas and Gang-gang Cockatoos can be located by the noise of cracking eucalyptus nuts.