Trung Trang Cave

Trung Trang Cave is the largest and most visited cave on Cat Ba Island, located in Trung Trang Valley within Cat Ba National Park in Cat Hai District, Hai Phong. Stretching about 300 meters through limestone karst, it features illuminated stalactites, stalagmites and spacious chambers. Discovered and developed for tourism, it is notable for its natural formations, easy access from Cat Ba Town and its historic use as a wartime shelter.

Visitors can expect a 300-meter-long limestone cave with paved walkways, artificial lighting and concrete steps leading through large chambers filled with stalactites and stalagmites in varied shapes. The cave is situated in a forested valley inside Cat Ba National Park, with a natural entrance and exit. Inside, interpretive lighting highlights rock formations, and the cool interior contrasts with the outside tropical vegetation. The visit involves walking, some stairs and photo stops.

The cave served as a headquarters and shelter for the Vietnamese naval forces between 1964 and 1968 and was used as a refuge during that period. It was later developed and opened for tourism as part of Cat Ba National Park.

Part of the Cat Ba Archipelago Biosphere Reserve, the cave is valued as a natural heritage site showcasing the karst landscape of Cat Ba Island and is a key attraction within Cat Ba National Park for nature-based tourism.