View from inside the mouth of Hang Én, fairly deep into the cave, above the pool and beach
|Location||Quảng Bình Province, Vietnam|
|Length||Approx. 1,600 m (5,400 ft)|
|Discovery||Known for centuries|
|Cave survey||1990s, British/Vietnamese|
|Height||Max. approx. 100 m (330 ft)|
|Width||Max. approx. 170 m (560 ft)|
Hang Én ('swift cave' in Vietnamese, named for the birds that nest in it), occasionally referred to as Én cave in English, is a cave in Phong Nha-Ke Bang National Park, a UNESCO World Heritage Site. Én is the third largest cave in the world, after Hang Sơn Đoòng in the same national park, and Deer Cave in Malaysia. The cave has its own jungle, waters, beach, and climate. There are three known entrances to Hang Én.
The cave, which goes through a mountain for 1,645 metres (5,397 ft), has a maximum height around 100 metres (330 ft), and a maximum width of approximately 170 metres (560 ft) is a feeder to Hang Sơn Đoòng, 2 kilometres (1.2 mi) away. The only ways to reach the cave are by helicopter, or an approximately four-hour jungle trek from the nearest road.
Both Én and Sơn Đoòng were featured in footage aired on the television program Good Morning America in May 2015, dubbed one of "the top 10 cultural events of the year" in Vietnam by Viet Nam News. Hang Én was selected by the US-based Warner Bros. as a shooting location for the 2015 film Pan.
- "Hang Son Doong cave is the world's biggest: What's it like inside?". News.com.au. 2015-06-06. Retrieved 2016-01-27.
- Wellman, Alex (2015-04-29). "Incredible pictures show enormous cave with its own beach, jungle and river inside - Mirror Online". Mirror.co.uk. Retrieved 2016-01-27.
- Hutchinson, John (2015-04-28). "Hang En cave has its own climate as well as a stunning beach | Daily Mail Online". Dailymail.co.uk. Retrieved 2016-01-27.
- "Vietnam's Son Doong Cave awes US television viewers". Tuoitrenews.vn. 2015-05-14. Retrieved 2016-01-27.
- "Porters contribute to success of ABC show on Vietnam's Son Doong Cave". Tuoitrenews.vn. Retrieved 2016-01-27.
- Wednesday, 27 January 2016. "Top 10 cultural events of the year - Life & Style - VietNam News". Vietnamnews.vn. Retrieved 2016-01-27.
- "En Cave selected for famous Hollywood film". VietnamNet. 2015-05-20.