The Blowhole diversion tunnel is located on the Sailors (or Jim Crow) Creek, Hepburn

Hepburn

Hepburn is a family name of the Anglo-Scottish Border, that is associated with a variety of famous personages, eponyms, places, and things. Although commonly a Scottish name its origins lie to the south of the border in the north of England. Specifically, the name is thought to have derived from...

, Victoria, Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

. The creek flows around a spur in a horseshoe bend. The tunnel was driven through the spur diverting the river and allowing the exposed river bed to be sluiced for alluvial gold. It "was probably built in the early 1860s when Jim Crow Creek was being extensively worked by European and Chinese miners."
The site is part of Hepburn Regional Park.

The Blowhole is listed on the Victorian Heritage Register

Victorian Heritage Register

The Victorian Heritage Register lists places of cultural heritage significance to the State of Victoria, Australia. It has statutory weight under the Heritage Act 1995 which establishes Heritage Victoria as the permit authority...

 and covered by a Heritage Overlay

Heritage Overlay

A Heritage Overlay or HO is one of a number of planning scheme overlays contained in the Victorian Planning Provisions, for use in planning schemes in Victoria, Australia...

.