Blue Mountain - Australia

The Blue Mountains is a mountainous region in New South Wales, Australia. It borders on Sydney's metropolitan area, its foothills starting approximately 50 kilometres (31 mi) west of the state capital. The area begins on the west side of the Nepean River and extends westward as far as Coxs River. Geologically, it is situated in the central parts of the Sydney basin.

Consisting mainly of a sandstone plateau, the area is dissected by gorges up to 760 metres (2,490 ft) deep. The highest point of the range is Mount Werong at 1,215 metres (3,986 ft) above sea level. A large part of the Blue Mountains is incorporated into the Greater Blue Mountains Area World Heritage Site, consisting of seven national park areas and a conservation reserve.

The Blue Mountains area includes the local government areas of the City of Blue Mountains, the City of Hawkesbury, the City of Lithgow and Oberon.
The Blue Mountains are a popular destination for Rock Climbers, Mountain Bikers and Hikers as well as canyoning and other adventure sports. These sports are well catered for by guiding companies and equipment stores located mainly in Katoomba.

Popular climbing destinations include the Centennial Glen cliffs near Blackheath, Mount Victoria, Mount Piddington and Mount Boyce. Climbing is currently banned on The Three Sisters.

Mountain biking takes place mainly on the many fire trails that branch away from the main spine of the Great Western Highway, such as Narrow Neck, Anderson's Fire Trail and others.
Likewise many of the fire trails are popular with day hikers, though many dedicated walking trails exist away from the fire roads