Am Phu Cave – The Longest and Most Mysterious Cave at Marble Mountains

Am Phu Cave is located on the southern slope of Thuy Son Mountain – the largest and most beautiful mountain in the Marble Mountains complex (also known as Non Nuoc), in Ngu Hanh Son District, Da Nang City, Vietnam. This complex is located about 8km southeast of Da Nang city center, near My Khe Beach and Non Nuoc stone carving village. Marble Mountains consists of six limestone mountains (Kim Son, Moc Son, Thuy Son, Hoa Son – including Duong Hoa Son and Am Hoa Son – and Tho Son), formed millions of years ago from geological tectonic processes, with a total area of about 2km².

To get here, you can travel by motorbike, taxi, or bus from central Da Nang. This location easily combines with Da Nang – Hoi An tours, and is often visited by tourists along with other caves such as Huyen Khong Cave or Linh Ung Pagoda. The coastal location brings a cool atmosphere, combining mountains and sea, making Am Phu Cave an ideal stop for those who love spiritual tourism and natural exploration.

Am Phu Cave was formed millions of years ago through karst geological processes in the limestone rocks of Marble Mountains, becoming the longest, largest, and most complex cave in this cave system. Many sections of the cave feature arches 45–50 m high and a deep, bottomless depth, creating a space that is both magnificent and mysterious.

The name “Am Phu” (Hades/Hell) originates from a legend during the Nguyen Dynasty. When King Minh Mang visited Marble Mountains, he was impressed by the gloomy and eerie atmosphere of the cave. The king ordered 12 soldiers holding torches to enter and explore, but the torches naturally extinguished, leading the king to name it Am Phu Cave, representing the underworld according to folk beliefs. Besides its spiritual value, Am Phu Cave is also associated with the Non Nuoc stone carving village. Craftsmen combined natural stalactites with bas-reliefs and worship statues depicting the 9 levels of hell and 12 gates of hell, conveying a profound message of karma: "good deeds bring good, evil deeds bring evil".

Stepping across the Yin-Yang Bridge (Nai Ha Bridge) in front of the cave entrance, you will immediately feel the difference between the earthly world and the "other side". Am Phu Cave is divided into two main paths, symbolizing Yin and Yang:

• Path down to Hell (on the right): A winding, tortuous, dark path that is about 4–6°C cooler than outdoors. Mossy stone steps and damp walls recreate the 9 levels of hell and 12 gates of hell, offering an experience that is both eerie and unique.
• Path up to Heaven (on the left): A steep but bright and airy path. At the end of the road, you will reach the "top of heaven" with a panoramic view of Marble Mountains, Tam Thai Pagoda, and Non Nuoc Beach.

The entire cave is like a tunnel through the mountain with a soaring stone arch and hundreds-of-years-old stalactites creating fascinating shapes. Yellow lights combined with bas-reliefs and sculptures sculpted by Non Nuoc artisans make the space vibrant, mysterious, and highly impressive.

When visiting Am Phu Cave, you shouldn't miss the following highlights:

• Yin-Yang Bridge: The symbolic entrance gate, marking the boundary between the earthly world and the "other world".
• Statue of Ksitigarbha Bodhisattva and the Judges: Located in the center of the cave, ruling over the 9 levels of hell and 12 gates of hell. The entrance to each gate is narrow, requiring visitors to lean sideways to pass through, creating a realistic feeling of passing through the gates of hell.
• Bas-reliefs recreating hellish scenes: Depictions of bull-headed and horse-faced demons punishing sinners, the scale of good and bad deeds, along with frightening punishments, carrying a profound message of the law of cause and effect (karma).
• Avici Hell: The end point of hell, associated with the legend of Maudgalyayana Bodhisattva saving his mother, symbolizing filial piety and the Vu Lan Festival.
• Path to Heaven: Transitioning from darkness to light, serving as a reminder of enlightenment and goodness.

Every detail inside the cave is a delicate blend of nature's creation and the skillful hands of Non Nuoc artisans, leaving visitors astonished and amazed.

To have a complete and smooth exploration of Am Phu Cave, visitors should be aware of basic information regarding the location, opening hours, costs, and necessary notes below:

• Address: 81 Huyen Tran Cong Chua Street, Hoa Hai Ward, Ngu Hanh Son District, Da Nang City (at the foot of Thuy Son Mountain).
• Opening hours: 07:00 – 17:00 (may be open later during peak season).
• Entrance ticket price for Am Phu Cave (additional ticket, purchased separately from the Marble Mountains entry ticket):
  • Adults: 20,000 VND/ticket
  • Children/Students: 7,000 VND/ticket
  • Children under 6 years old: Free
• Best time to visit:
  • During the year: Dry season (February – mid-September) for convenient walking and hiking.
  • During the day: Morning (7:00-10:30) or afternoon (14:30-16:30) to avoid intense sun and crowds.
• Notes when visiting:
  • Attire: Polite, modest (due to spiritual nature), prioritizing light, sweat-absorbent clothing.
  • Footwear: Low-heeled, non-slip shoes.
  • Equipment: Bring a flashlight or use a phone flash because it is quite dark inside the cave.

Thoroughly preparing with the above information will ensure your journey to explore the mysterious spiritual space of Am Phu Cave takes place safely, comfortably, and meaningfully.

Leaving the quiet space of Am Phu Cave, the bright light from the cave mouth serves as a reminder of rebirth and hope. The contemplative journey across Nai Ha Bridge, passing through the judgment levels of King Yama, and stopping before the boundless filial piety of Maudgalyayana has fulfilled its mission: not just a sightseeing tour, but a deep spiritual purification and self-reflection experience. Am Phu Cave is truly the philosophical gem of Marble Mountains. To fully encapsulate this mysterious beauty and valuable life lesson, don't hesitate to plan an all-inclusive Marble Mountains tour with Sovaba Travel, where you will be guided across this mystical boundary and discover the entire magnificent landscape of Da Nang.