David 'Dave' Noble (born 1965) discovered the Wollemi Pine on September 10, 1994. 1965 was a common year starting on Friday (the link is to a full 1965 calendar). ... Binomial name Wollemia nobilis The Wollemi Pine (Wollemia nobilis) is a remarkable coniferous tree that was discovered in 1994 in a remote series of narrow, steep-sided sandstone gorges in a mild temperate-zone rainforest wilderness area of the Wollemi National Park in New South Wales, 150 kilometers north-west... September 10 is the 253rd day of the year (254th in leap years). ... 1994 was a common year starting on Saturday of the Gregorian calendar, and was designated the International year of the Family. ...
John and Olive Noble, David's parents, emigrated from England to Australia when he was two years old.
A modern day explorer, Noble has visited sites in the Wollemi National Park that few if any other people have seen and is known for exploring the canyons of the Wollemi Wilderness. He has named over two hundred remote features. Wollemi is a national park in New South Wales (Australia), 129 km northwest of Sydney. ...
At the time of discovering the Wollemi Pine, Noble was a field officer with the National Parks and Wildlife Service (NSW). After his discovery Noble completed a bachelor of applied science degree and was promoted to a ranger.
The Wollemi Pine species (Wollemia nobilis) was named after David Noble.
Reference
James Woodford, The Wollemi Pine: The incredible discovery of a living fossil from the age of the dinosaurs, The Text Publishing Company, 2002, ISBN 1-876485-74-4
David Noble's home page (http://web.archive.org/web/*/http://www.lisp.com.au/~daven/index.html), from the Internet Archive
A general Essay on Blue Mountains Sandstone Canyons that covers a definition of a canyon, a short history of canyoning, canyon geomorphology and canyon areas.
DavidNoble'sCanyoning PageAn impressive set of canyoning pages are being set up by the other "Dave Noble" (yes - another Dave Noble who is also a very keen canyoner and active canyon explorer).
Chris Collier has many attractive photos of canyons in his website at Gerkin Press.
Canyons can be horizontal - and then either dry or wet (with long pools and no banks) or more typically a small stream with sand and boulders and some sections with pools.
Canyon exploration however received a boost when canyoners such as Tom Williams (Springwood Bushwalking Club (SBC)) and the author (SUBW and SBC) who were on a Ntional ParksAssociation trip led by Ted Daniels' in the Wolgan area.
Canyons in the Banks Wall are typically short and narrow and with walls of limited height.