A gallery of rock art, dating back to when Stonehenge was built and before China was a unified empire, has been found in Wollemi National Park. The site is covered in 203 drawings in 12 layers built up over time and, for the most part, the illustrations are 4,000 years old. The superimposed layers are pristine and in various colours of red, yellow, white, charcoal and black. The park is also the largest remaining forested wilderness in NSW. The Wollemi Pine, a "living dinosaur" here in 1994.