Darial Gorge
Russia
The Darial Gorge is a river gorge on the border between Russia and Georgia. It is at the east base of Mount Kazbek, south of present-day Vladikavkaz. The gorge was carved by the river Terek, and is approximately 13 kilometres (8.1 mi) long. The steep granite walls of the gorge can be as much as 1,800 metres (5, 900 ft) tall in some places. The Georgian Military Road runs through the gorge.
Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).