The likeness of the late Ailsa Iceton has been captured in bronze by Uralla sculptor Carl Merten.
The bas-relief of Mrs Iceton has been installed on a rock at the top of the Ailsa Iceton Walkway at Pensioners Hill in memory of her compassion and kindness towards those in need.
During the Great Depression, Mrs Iceton took food and clothing to the less fortunate who lived in shanties below Pensioners Hill.
The memorial plaque was funded by the Rotary Club of Gunnedah West. Almost $1000 of the $5500 cost was funded by Gunnedah Shire Council's 365 Small Grants Program.
Rotary president Mark Kesby said the new addition "completes the circuit" of historical landmarks on the hill.
"We wanted to honour her because she was historically important and until recently, probably forgotten," he said.
"It completes the story of what we're trying to communicate up there with [The Heritage Stone Sculptures]."
An information board detailing Mrs Iceton's life was installed next to the Ailsa Iceton Walkway in 2001 after the Gunnedah and District Historical Society proposed that the walkway be named in her honour.
The renamed walkway was officially opened in December 2001 by her son Ned.
Ned was likewise honoured in 2017 when Mr Merten designed and installed a memorial plaque at the lookout recognising his charitable works, including the establishment of the Nurturing Evolutionary Development (NED) Foundation.
Mr Merten and his partner Joan Relke are also the creative genius behind The Heritage Stone Sculptures, which were envisioned by the late Hans Allgayer and opened in 2012.