Kings Tableland is the eroded remnant of a sandstone

Sandstone

Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains.Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow,...

 layer approximately 1000m above sea level, situated immediately south of Wentworth Falls, New South Wales

Wentworth Falls, New South Wales

Wentworth Falls is a town in the Blue Mountains, New South Wales located 100 kilometres west of Sydney, and about 8 kilometres east of Katoomba, Australia on the Great Western Highway, with a Wentworth Falls railway station on the Main Western line. The town is situated at an elevation of...

, Australia in the Blue Mountains, marking the eastern edge of the Jamison Valley

Jamison Valley

The Jamison Valley forms part of the Coxs River canyon system in the Blue Mountains of New South Wales, Australia. It is situated approximately 100 kilometres west of Sydney, capital of New South Wales, and a few kilometres south of Katoomba, the main town in the Blue Mountains.-History:The...

. The Kings Tableland Observatory is located there, with two modern telescopes and a flat screen planetarium. A road from Wentworth Falls runs north and south along the plateau and there is a track descending from the western edge down into the Jamison Valley, originally leading to the old (now abandoned) sewerage works below the cliffs at Katoomba

Katoomba, New South Wales

Katoomba is the chief town of the City of Blue Mountains in New South Wales, Australia and the administrative headquarters of Blue Mountains City Council. It is on the Great Western Highway 110 kilometres west of Sydney and 39 kilometres south-east of Lithgow. Katoomba railway station is on the...

. The abandoned Queen Victoria Hospital is also located on Kings Tableland.