Yengo National Park is a wild area of steep gorges and rocky ridges. It forms part of the Greater Blue Mountains World Heritage area, and well as its natural beauty the Old Great North Road (or Convict Trail) follows the south-east boundary of the park. A great way to get away from it all and explore this rugged landscape is on the Big Yango Loop Trail. The 22km trail includes some steep climbs and descents, as well as a few tight switchbacks. Access is via a locked gate, and a key is required to enter. Please phone NPWS Gosford Office on 4320 4203 to arrange access.