The Cromwell Gorge is a deep gorge on the Clutha River

Clutha River

The Clutha River / Mata-Au is the second longest river in New Zealand flowing south-southeast through Central and South Otago from Lake Wanaka in the Southern Alps to the Pacific Ocean, south west of Dunedin. It is the highest volume river in New Zealand, and the swiftest, with a catchment of ,...

 in the Otago

Otago

Otago is a region of New Zealand in the south of the South Island. The region covers an area of approximately making it the country's second largest region. The population of Otago is...

 region of New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

's South Island

South Island

The South Island is the larger of the two major islands of New Zealand, the other being the more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, to the south and east by the Pacific Ocean...

. It stretches for 20 km south of the town of Cromwell

Cromwell, New Zealand

Cromwell is a town in Central Otago in the Otago region of New Zealand.It is situated between State Highway 6 and State Highway 8 leading to the Lindis Pass, 75 km northeast, and Alexandra, 33 km south. The road to Alexandra winds through the Cromwell Gorge...

 towards Alexandra

Alexandra, New Zealand

Alexandra is a town in the Central Otago district of the Otago region of New Zealand. It is located on the banks of the Clutha River , on State Highway 8, 188 km by road from Dunedin and 33 km south of Cromwell.At the time of the 2006 census, the permanent population was 4,827, an...

.

Long associated with the production of stone fruit, the gorge was substantially drowned in the 1990s by the creation of Lake Dunstan

Lake Dunstan

Lake Dunstan is a man-made lake and reservoir in the South Island of New Zealand.The lake was formed on the Clutha River as a result of the construction of the Clyde Dam, filling in four controlled stages beginning in April 1992 and completed the next year...

 behind the hydroelectric

Hydroelectricity

Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy...

 Clyde Dam

Clyde Dam

The Clyde Dam, New Zealand's third largest hydroelectric dam, is built on the Clutha River near the town of Clyde. It is owned and operated by Contact Energy.-History:...

. This resulted in the closure of the Otago Central Railway beyond Clyde

Clyde, New Zealand

Clyde is a small town in Central Otago, New Zealand with a population of 918 in 2006. It is located on the Clutha River, between Cromwell and Alexandra....

 and the re-routing of State Highway 8's route through the gorge.