Embark on an unforgettable adventure by trekking through the stunning jungle landscapes of Phong Nha-Ke Bang National Park to reach Hang En Cave, currently recognized as the world's third-largest cave. Accessing Hang En is an experience in itself, typically requiring a challenging full-day trek (usually part of an overnight tour) that involves navigating dense jungle trails, crossing rivers multiple times, and descending into a scenic valley. This challenging access makes it a true hidden gem experience compared to the easily reachable main caves.

The reward for the trek is entering the colossal chambers of Hang En. The cave boasts two massive entrances and its own unique ecosystem, including a river flowing through it and a stunningly picturesque campsite set up on a sandy beach within one of the main chambers, often illuminated by shafts of light filtering from above. Spending a night camping inside this immense cave, listening to the sounds of the river and the jungle outside, is a truly magical and humbling experience.

Visiting Hang En requires booking a guided tour with a licensed operator due to its location within the national park's core zone and the challenging nature of the trek. Permits are limited, ensuring the experience remains relatively exclusive. For fit and adventurous travellers seeking a serious trek combined with the awe-inspiring experience of exploring and camping inside one of the planet's largest caves, the Hang En expedition is an unparalleled hidden gem adventure in Phong Nha.