Ninh Binh: Discovering the Mermaid Cave – a mystical “gem” hidden deep within Thung Nham.

Mermaid Cave is one of the most unique underwater karst (limestone) caves located within the Thung Nham ecological tourism complex in Ninh Binh province. With a length of over 500m, a widest point of 40m, and a ceiling height of up to 30m, it is an ideal destination for those who love exploring the pristine beauty of nature.

The mysterious beauty of a centuries-old underwater cave.

Unlike many underwater caves in Ninh Binh that require boat tours, visitors to Tien Ca Cave can experience a walking journey on a system of winding floating bridges close to the underwater surface. This approach allows viewers to observe each geological formation up close.

The interior of the cave is airtight, always cool, and carries a slight chill characteristic of the underground water flowing from the rocky mountains. Venturing deep inside, visitors will feel as if they have wandered into a magnificent palace at the bottom of the ocean.

A journey to discover stalactites and the iconic Little Mermaid.

The name "Mermaid Cave" originates from the rich system of stalactites and stalagmites sculpted by nature over hundreds of millions of years. These sparkling, diamond-like formations have bizarre shapes reminiscent of coral reefs, dolphins, or elephant heads. Notably, inside the cave is a meticulously carved statue of a mermaid, commemorating the legend of the mermaid-shaped stalactites that once appeared there.

Furthermore, the cave's unique highlight lies in its alternating open spaces. Here, natural light from the outside filters through the crevices in the rocks, creating magical patches of light and shadow on the calm, emerald-green water. The harmonious blend of rock, water, and light makes this place a "precious gem" in the heart of the heritage site.

Legends about "Fish Cave" and the fish species fit for royalty.

According to a representative of the tourist area, before being given its current elegant name, this place was simply called "Fish Cave." The reason is that it was home to two rare fish species: the royal snakehead fish and the Trường Trường perch. These fish live in the pure, cold waters of the Trường Yên - Thung Nham limestone mountain range and were once caught by locals to offer to the emperor.

Practical notes for your sightseeing trip.

To make your exploration of Mermaid Cave complete, visitors should note the following points:

• Move:You have to cross an iron bridge leading underground and conquer about 40 steep iron steps to get deep inside the cave.
• Skin:Shoes with good grip are recommended as some sections of the stone steps may be wet. Some of the cave walls are quite low, requiring visitors to squeeze or bend down to pass through.
• Time:The cave is suitable for visiting year-round thanks to its sheltered space, which is warm in winter and cool in summer.

With its pristine yet magnificent beauty, Mermaid Cave is not only a popular check-in destination for international tourists but also a unique cultural and geological space that helps visitors understand more about the wonders of Ninh Binh's nature.