# Phong Nha Cave

- **Country:** Vietnam
- **Depth:** Unknown
- **Access:** by Son river
- **Length:** 7729
- **Survey:** Unknown
- **Hazards:** underground river
- **Location:** Vietnam
- **Discovery:** unknown
- **Difficulty:** Dangerous
- **Photo Width:** 251
- **Photo Caption:** Phong Nha Cave
- **Entrance Count:** 2 (river opening and ending)

Phong Nha Cave (Vietnamese: Động Phong Nha, ) is a cave in Phong Nha-Kẻ Bàng National Park, a UNESCO World Heritage Site in Quảng Trị Province, Vietnam. It is 7,729 meters long and contains 14 grottoes, as well as a 13,969 meter underground river. While scientists have surveyed 44.5 kilometers of passages, tourists are only allowed to explore the first 1500 meters.

![Photo of Phong Nha Cave](https://upload.wikimedia.org/wikipedia/commons/2/2d/PhongNhaCave2.jpg)

**Source:** https://en.wikipedia.org/wiki/Phong_Nha_Cave (Wikipedia, CC BY-SA)