Thuy Son, the Marble Mountain you can climb, has six caves worth knowing: Huyen Khong, the largest and the one lit by sunbeams; Am Phu, the underworld cave at the foot of the hill; Van Thong, a rock chimney you climb; Tang Chon, behind Linh Ung pagoda; Hoa Nghiem, the small cave you pass on the way to Huyen Khong; and quiet Linh Nham.
If you see only one, make it Huyen Khong. With two to three hours you can see all six. Unlike show caves elsewhere, these have almost no stalactites: they are open, airy shrines, many with openings to the sky.
Every cave, in the right order
Our guides take you through the caves of Thuy Son in the order that works, and explain what each shrine is for.
★Marble Mountains, Lady Buddha & the Stone CarversThe Marble Mountains caves at the hour the light comes in, the Lady Buddha on Son Tra and a working Non Nuoc carving yard, with your own guide and car. · 5 hoursSee the tour →Marble Mountains, Lady Buddha & Hoi An by Lantern LightSon Tra, the Marble Mountains caves and a Non Nuoc carving yard in the morning, then Hoi An old town and a boat on the Thu Bon as the lanterns come on. · 10 hoursSee the tour →Which Marble Mountains caves are worth seeing?
| Cave | Where | Effort | Time | Worth it? |
|---|---|---|---|---|
| Huyen Khong | Upper west side, through Hoa Nghiem | Steps down into a large hall | 30 to 40 min | Yes, the highlight |
| Hoa Nghiem | The antechamber of Huyen Khong | Easy | 5 to 10 min | Yes, on the way |
| Am Phu | Foot of the hill, at Gate 2 | Easy to enter; steep climb to finish | 30 min | Yes, with its own ticket |
| Tang Chon | Behind Linh Ung pagoda | Short steps | 15 min | Yes, and quieter |
| Van Thong | Between Linh Ung and Tam Thai | A tight climb up a rock chimney | 20 min | For the agile |
| Linh Nham | Near Tam Thai pagoda | Easy | 10 min | If you have time |
The loop that links them all is set out in the Marble Mountains itinerary.
Why do these caves look different from other caves?
The caves of the Marble Mountains sit high in isolated marble and limestone hills, and most have openings in their roofs. That makes them dry, bright and well ventilated, with flat floors and almost none of the hanging stalactites found in the limestone caves of northern Vietnam.
They have also been places of worship for centuries. Monks lived and prayed in them, emperors visited them, and their walls carry altars, statues and carved inscriptions. A visit is closer to walking through a series of chapels cut into the rock than to a geology tour.
Huyen Khong: the one to plan around
Huyen Khong is a round, bell-shaped hall about 16 metres high, with five openings in its roof. On sunny mornings, roughly between 9:00 and 11:00, shafts of light fall across a stone Buddha carved in 1960 by a Non Nuoc master. It is the image most people have of the Marble Mountains, and the reason to time your visit.
Am Phu: the underworld at the foot of the hill
Am Phu is the second-largest cave in Thuy Son and the most theatrical. You cross a bridge over a symbolic river of the dead into a cave laid out as the Buddhist underworld, with scenes of judgement carved by Non Nuoc stonemasons, then climb towards daylight on a path representing the way to heaven. It has a separate ticket at 20,000 VND (~$1).
Tang Chon, Van Thong, Hoa Nghiem and Linh Nham
Tang Chon, behind Linh Ung pagoda, is a small valley-like cave about ten metres long, open to the sky through a gap in the rock and carrying 20 of the hill’s carved inscriptions. Van Thong is a narrow chimney that climbs about 40 metres from its mouth to a hole in the sky. Hoa Nghiem, the small shrine you pass through before Huyen Khong, holds a statue of Quan Am and an old stone stele. Linh Nham, near Tam Thai pagoda, is small and usually quiet.
The cliffs and caves of the hill carry 78 carved inscriptions recognised by UNESCO; the largest groups are in Tang Chon and Hoa Nghiem. The complete Marble Mountain guide covers the rest of the hill.
Want the caves explained as you go?
Our half day covers every cave on Thuy Son with a licensed local guide, timed for the light in Huyen Khong.
Marble Mountains, Lady Buddha & the Stone Carvers5 hoursSee the tour →Marble Mountains, Lady Buddha & Hoi An by Lantern Light10 hoursSee the tour →Marble Mountains caves: quick answers
What is the best cave at the Marble Mountains?
Huyen Khong is the best and largest cave on Thuy Son. On sunny mornings between about 9:00 and 11:00, sunlight falls through its roof onto a stone Buddha.
How many caves are there in the Marble Mountains?
Thuy Son alone has more than a dozen named caves and grottoes; six are commonly visited: Huyen Khong, Hoa Nghiem, Am Phu, Tang Chon, Van Thong and Linh Nham.
Are the Marble Mountains caves included in the ticket?
The caves on the hill are included in the main entry ticket. Am Phu cave, at the foot of the hill, has its own ticket at 20,000 VND (~$1).
Are the Marble Mountains caves dark?
Most are bright and airy, thanks to openings in their roofs. Am Phu and the upper part of Van Thong are the darkest; a phone torch helps.
See the caves at their best
Choose your group size and the price covers the day: pickup, private car, licensed guide, every ticket including Am Phu cave, and water. Free to cancel until 3 days before.
★Marble Mountains, Lady Buddha & the Stone CarversThe Marble Mountains caves at the hour the light comes in, the Lady Buddha on Son Tra and a working Non Nuoc carving yard, with your own guide and car. · 5 hoursfrom$39/ person›
Choose your group size · price is the group totalSolo traveller$135BOOK →2 guests$140BOOK →3 guests$150BOOK →4 guests$155BOOK →See the full tour page →Marble Mountains, Lady Buddha & Hoi An by Lantern LightSon Tra, the Marble Mountains caves and a Non Nuoc carving yard in the morning, then Hoi An old town and a boat on the Thu Bon as the lanterns come on. · 10 hoursfrom$89/ person›
Choose your group size · price is the group totalSolo traveller$265BOOK →2 guests$295BOOK →3 guests$325BOOK →4 guests$355BOOK →See the full tour page →Cave details were checked against the site management board and published sources in September 2026.