The area is rich in plant life, producing moist forests and a wealth of plant species. Mountain blue gums and blackbutt trees shelter the smaller brush cherry, climbing vines and tree ferns. Across late winter and into early spring, colourful orange-coloured banksias, brilliant purple happy wanderers, and the many hues of yellow wattle trees all flower in bright abundance.

From Monkey Face lookout, there are spectacular views down over Martinsville Valley, and 6km along Georges Road to the north, Narrow Place lookout provides a 180-degree panorama toward Cessnock, Hunter Valley and beyond the Barrington Ranges. There are so many ways to enjoy the scenery, whether by horse riding, 4WD touring in the wetter months, mountain bike riding or pulling into a shaded picnic area to cool down after a walk.

Log chutes and old saw mill sites used during past forestry operations still stand among the plants as a testament to the region's rich settlement history. By the 1820s, a fertile timber industry had established itself, providing cedar and hardwood from the area to the building and growing coal mining industries. Increased timber production provided employment and wealth to the region, and you can still see relics from these operations throughout the park.

The park is of great importance to the Awabakal and Darkinjung People, and rare insights into art and engraving techniques have been found at over 40 recorded locations in the Watagan Range and surrounding lands. Given that there are only six known Aboriginal engraving sites in the wider Sydney region, this one is particularly noteworthy for its display of more than 100 abstract motifs carved into walls throughout the park.