Angel Eye Mountain: The Legendary “Hole In Heaven” Of Vietnam
Angel Eye Mountain, also known as Nui Mat Than, is a spectacular natural wonder in Cao Bang. This mountain has an enormous circular hole, surrounded by breathtaking karst landscapes. Visiting this special mountain provided an amazing insight into Vietnam’s beautiful highlands.
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ToggleIntroduction To Angel Eye Mountain
Tucked away in Non Nuoc Cao Bang Global Geopark, Angel Eye Mountain, or Nui Mat Than, mesmerizes every traveler to arrives here. Its biggest characteristic is an immense round hole through the limestone peak that forms an image of a giant “eye” looking over the valley. Surrounded by verdant grassland and tranquil lakes, Angel Eye Mountain is one of the most photogenic and magical sites in Cao Bang.

Travelers experience the contrast of rugged mountains with calm scenery. The cool breezes, clear streams, and trailing mists drifting among the green meadows create a sense of peacefulness that is pure. Angel Eye Mountain is a paradise for nature and photo lovers, as well as an unforgettable place to visit for those who love special places far from the hustle and bustle of modern life.
History Of Angel Eye Mountain
Angel Eye Mountain, known as Phja Piót by the Tay ethnic group, means “the mountain with a hole.” The mountain has its name from the large circular hole that cuts through the limestone summit, which looks like “an eye of God”, staring up at the sky while the sun shines through it – the mountain takes on an ethereal glow in the early sunlight, which makes it feel like a magical sight. The mountain is located in the Thang Hen Lake system, made up of 36 interconnected lakes and underground rivers, and is one of the few geological wonders of the world.
Top 3 Iconic Attractions In Angel Eye Mountain
At every corner of this destination, a scene to behold awaits you – between the green meadows, tumbling waterfalls, and beautiful mountain roads, we have some of the highlights of your travel itinerary.
The Awe-Inspiring Views Surrounding Angel Eye Mountain
With the perfect mix of azure hues and lush green valleys, Angel Eye Mountain (Thung Mountain) is a work of art painted by the natural world. The surrounding view is tranquil yet grand, featuring rolling hills and calm grasslands that seem to stretch infinitely. In particular, it is one of the most magical places at sunrise. Morning sunshine peeks through on the mountain’s “eye,” bathing the mountain in golden light that looks like a sunflower’s radiant halo.

The Serene Beauty Of Nam Tra Waterfall
Located not far from the mountain, Nam Tra Waterfall is a precious “diamond” that makes Angel Eye Mountain even more beautiful. When it rains, the waterfall transforms into silky white trickles down mossy rocks fringing fresh green hills. In addition to the pure water combined with a serene landscape, the space is ideal for visitors to relax and listen to the sound of nature.

In the area, visitors may also sample an array of indigenous delicacies such as wild fruits and fish specialties from Thang Hen Lake and, of course, sweet potatoes from the forest – perfectly paired with the warm corn wine of the Tay people.
The Beautiful Trip To Mount Angel’s Eye
Even before reaching Mount Angel’s Eye, the drive can already feel like a part of the adventure. The road to get there follows a winding path through expansive grassy fields surrounded by towering limestone mountains and thick forest. Sunlight spilling through the trees can make the entire route feel like a scene from a dream. As you ride or walk the road, it exudes a palpable sense of peace and fascination, as each turn reveals another picture-perfect view. It is a perfect way of experiencing the natural beauty of northern Vietnam, and especially the mountains.
4 Unforgettable Experiences You Shouldn’t Miss
Visiting Angel Eye Mountain is not only about seeing the unique mountain, but also about witnessing the breathtaking beauty and unspoiled nature of Cao Bang. Here are some experiences not to miss that will elevate your trip to the next level.
Enjoy the Unspoiled Nature of Angel Eye Mountain
Angel Eye Mountain is in a peaceful and isolated place, where nature has been left undisturbed. The green hills go for miles, with layers of mountains in the distance that create a view that is truly breathtaking. As you arrive at the base of the mountain, you will see colorful fields where you may spot buffalo lazily grazing in the fields in the serenity of nature. At this moment, you feel completely immersed in nature. Along with Thang Hen Lake, the reflection of the mountain in the peaceful surface of the lake is truly magical and poetic.

Unveil the Geological Mysteries of the “Eye”
Leading geologists assert that Angel Eye Mountain is a circular cave with a diameter of 50 meters located 50 meters above Thang Hen Lake. This incredible structure was formed during the Neotectonic cycle through fascinating geological movements. During the past millions of years, these processes transformed and shaped the limestone mountains and dozens of lakes forming the Thang Hen – Angel Eye landscape complex. All of these features are reminders of the dynamic beauty of the Earth, and this living natural masterpiece.

Enjoy Camping Around Angel Eye Mountain and Thang Hen Lake
With its expansive green fields and a bright blue sky, Angel’s Eye Mountain is a great spot for camping enthusiasts. Encamp among the grass-filled plains surrounded by towering cliffs and the placid surface of Thang Hen Lake. As night falls, you could start a small campfire, eat simple BBQ, and share songs and laughter with friends. Camping in this area offers peace, freedom experience with nature that you should try and never forget in Cao Bang.
Take A Trip to Ban Gioc Waterfall
From Angel’s Eye Mountain, in Tra Linh District, you can visit Trung Khanh and check out the Ban Gioc waterfall – one of the most beautiful waterfalls in Southeast Asia. Ban Gioc waterfall pours over vibrant green cliffs in a way that is nothing short of breathtaking. It’s truly amazing to listen to the sounds of rushing water, as they combine with birdsong or simply the cooling mist settling in the air. Don’t forget to take your camera because every corner of this place has a view that is sure to produce pictures you can share with friends.

Entrance Fee
Angel Eye Mountain is entirely non-commercialized and has no entry fees. Visitors can explore and experience the enjoyment of the natural scenery at Angel Eye Mountain freely. Some visitors come at noon to watch the sunset, while some come in the afternoon to camp overnight in order to witness the spectacular sunrise illuminating the mountain’s “Eye.”
Best Time To Visit Angel Eye Mountain
Angel Eye Mountain is beautiful in all four seasons, but the best time to visit is from September to October in Cao Bang. This is the dry season, when the water level of Thang Hen Lake drops for a few hours, exposing an incredible view of Angel Eye Mountain and the Nam Tra Waterfall below. The scenery is even more poetic with clear skies and the surrounding forest glowing from the sun’s warm rays. It is during this season that adventurous travelers and photographers come to behold and capture this amazing natural phenomenon.
How To Get To Angel Eye Mountain
Angel Eye Mountain is nearly 50 km away from Cao Bang City, so it is quite reasonable for visitors. You may use a motorbike or a car, but the best experience is to travel on a motorbike because the route to Angel Eye Mountain is very scenic. The last stretch to the mountain is narrow but offers incredibly beautiful views, and only a motorbike can travel to the valley below.

Traveling to Angel Eye Mountain from the center of the city can be done in 2 ways. The first is simply letting Google Maps provide you with detailed directions to get there, or you can follow the steps of the second way.
Drive on National Highway 3 for about 12 kilometers until you cross Ma Phuc Pass, and then take Provincial Road 205 towards Tra Linh for an additional 7 kilometers. Make your way to Thang Hen Lake and Ban Danh Village, located in Quoc Toan Commune. Look for a little trail at the foot of the mountain and walk about another 1.5 kilometers to get to this beautiful location.
Things To Know Before Traveling To Angel Eye Mountain
Before you embark on your adventure to Angel Eye Mountain, it may be helpful to consider a few things to ensure a successful and unforgettable journey. Here are some tips for enjoying this natural phenomenon to the fullest:
- The road leading up to Angel Eye Mountain is steep and can be bumpy, so you should definitely rent a motorbike or a car that has good suspension.
- Bring plenty of food, water, and camping things, as there are services and shops around the area.
- It is best to visit between September and October for pleasant weather with beautiful natural scenery.
- Make sure to wear comfortable hiking shoes to move quickly through rocky or grassy fields.
- Depart in the early morning to avoid the heat, and be there early enough to see the mountain’s “eye” at sunrise.
- If you plan to camp overnight, be sure to bring warm clothes because temperatures can drop significantly.
- Be respectful of the environment while there. Do not litter and try to maintain the natural beauty of this remote location.
FAQs About Angel Eye Mountain
Before going on your journey to Angel Eye Mountain, you may have a few inquiries about what to expect, how to get there, or what to take with you. Below are some frequently asked questions (FAQ) that will assist you in getting the most out of your trip.
Can I camp near Angel Eye Mountain?
Of course, this is one of the most popular activities available. You have the option to set up your own tent on grassy fields close to the lake. Then, spend a peaceful night sleeping under the stars and waking up to an amazing sunrise shining through the “eye” of the mountain.

What are the attractions near Angel Eye Mountain?
You can combine your visit to Angel Eye Mountain with visiting other places nearby, such as Thang Hen Lake, Nguom Ngao Cave, and Ban Gioc Waterfall. All of these locations are within the UNESCO Global Geopark, taking advantage of the area’s natural beauty.
Is Angel Eye Mountain busy during weekends or holidays?
The area is typically very quiet and not overcrowded, even on weekends. There might be an increase in tourists, photographers, and backpackers during public holidays and local festivals.
How long does it take to visit Angel Eye Mountain?
Most visitors typically spend approximately half of a day visiting the area and hiking, taking pictures, and relaxing by the lake. If you plan to camp or want to catch either sunrise or sunset, it is better to stay overnight.
Final Thoughts: Is Angel Eye Mountain Worth Visiting?
Angel Eye Mountain is one of the most breathtaking natural sites in Cao Bang, combining mystery, beauty, and tranquility in one miraculous view. The immense “eye” in the limestone cliff and the extensive grassy meadows surround you in a dreamy landscape that provides a perfect escape for photographers and adventurers alike. Visitors can hike up winding paths, camp out under the stars, or just savor the peaceful and lovely nature of northern Vietnam’s highlands. Let Seni World take you to discover the amazing beauty of Angel Eye Mountain for yourself.