The Blue Mountain National Park (2'470 square kilometres) is located in the west of Sydney. It includes the Three Sisters rock formation, located in the southern part of the park. The three sandstone peaks Meehni (922 m), Wimlah (918 m) and Gunnedoo (906 m) are located above the Jamison Valley, near the town of Katoomba.
The highest point within the park is Mt. Werong (1'215 m). In the year 2000 the region was placed on the World Heritage List.
Australia 1934, Captain John Macarthur.
The stamps are commemorating the centenary of the death of John Macarthur in 1934. He was a pioneer of settlement in Australia. The Australian region "Macarthur" (New South Wales) is named after him and forms geographically the foothills between the regions of the Blue Mountains and Southern Highlands.
An Australian stamp catalogue is telling that the design was created by superimposing a photo of a champion ram on a photo taken of the Blue Mountains from Macarthur's homestead site.
Australia 1963, 150th Anniversaty of Crossing the Blue Mountains.
In 1813 Gregory Blaxland, William Lawson and William Charles Wentworth explored the Blue Mountains and George Evans surveyed the route inland. In July 1814 William Cox and convicts built the road in just six months and in 1815 Governor Lachlan Macquarie travelled along the new road to the place they called Bathurst.
Australia 2001, Three Sisters rock formation.
(water-activated and self-adhesive)
The stamp was issued in the series "International stamps – Views of Australia".
Australia 2008, Grose River Gorge.
(perforated/gummed & self-adhesive/die-cut)
The Grose River rises from north east of Mount Victoria within the Blue Mountains National Park, and flows through the Grose Valley and parts of the Greater Blue Mountains Area.
Australia 2012, Blue Montains Crossing 1813.
(engraving by Emile Ulm from Sydney Mail, 1880)
The stamp was issued in the series "Inland Explorers".
Australia 2014, Blue Mountains Nationalpark.
The stamp was issued in the series "Wilderness Australia II".
The small picture above shows the Three Sisters rock formation and Mt. Solitary (950 m) in in the background.
The picture below shows a view from the Pulpit Rock viewpoint across the Grose Valley. The rounded mountain in the background is known as Mt. Hay (944 m).
Australia 2015 "National Pass".
The National Pass is a six-kilometre-long loop walk, accessible via Conservation Hut in the village Wentworth Falls, which is located at an elevation of 867 metres on the sandstone plateau. The track was built 1906/1907 into the cliffs and offers views of the Jamison Valley, several waterfalls and the surrounding cliffs.
The stamp is existing perforated/water-activated & die–cut/self–adhesive and was issued in the series "Great Australian Walks".