See entry Woolpack Gap. Wolgan Gap was the previous name.
Wolgan Gap Ref: Parish of Wolgan 1905, 3rd ed; 1916, 4th; 1930, 5th editions and Carnes Geological Map Capertee and Wolgan Valley, 1901. It was not until the Ben Bullen Topo Map of 1974 that Woolpack Gap is shown and gazetted by the Geographical Names Board 20th June 1975. It quite obviously was renamed to avoid confusion with Wolgan Gap on the Wolgan Road as the entrance to the valley.