 In 2000 it was included as part of the Greater Blue Mountains World Heritage Area.In 1999, 37 walking tracks were added to the State Heritage Register, extending from and the Nepean River in the east; to Mount Tomah in the north; to Wolgan Valley and in the northwest; to Jenolan Caves and in the west; and in the south, numerous walks leading down the plateau from Katoomba, Leura and Wentworth Falls.The Blue Mountains National Park lies on the eastern side of the Great Dividing Range.