Which waterfall shared by Zambia and Zimbabwe is a World Heritage Site?

The waterfall shared by Zambia and Zimbabwe that is a World Heritage Site is Victoria Falls.

Victoria Falls lies on the Zambezi River along the border between the two countries. Known locally as Mosi-oa-Tunya, meaning “The Smoke That Thunders,” it forms a vast curtain of water about 1,708 metres wide. Seasonal changes in the Zambezi can transform the falls from a roaring wall of spray to exposed rock channels and narrower cascades.

The falls cut through a series of basalt gorges created as the river exploited cracks in the volcanic rock. Their geological setting is still changing: erosion gradually shifts the waterfall upstream, leaving older gorge sections behind. The surrounding protected area supports rich wildlife and birdlife, including the Taita falcon.

Local communities knew the falls long before European exploration. Scottish missionary David Livingstone saw them from Livingstone Island in 1855 and named them after Queen Victoria, but the indigenous name remains officially recognised. UNESCO inscribed Mosi-oa-Tunya/Victoria Falls as a transnational natural World Heritage Site in 1989.