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Son Doong Cave, located in Phong Nha Ke Bang National Park (Quang Binh province), is the world's largest cave, boasting the most beautiful stalactites and the longest underground river.
Son Doong Cave was first discovered by a local resident in 1991, but it wasn't until an expedition by the British Royal Cave Association surveyed it in 2009 that it became widely known. Photo: Giant stalactite formations inside the cave, some reaching heights of up to 40 meters.
The Marble Cathedral, located in Patagonia, Chile, is considered a perfect creation of nature. This landmark is also known as the Blue Cathedral, because the natural curves of the marble resemble the vaulted ceilings of European churches.
The sunlight shining down creates a sparkling reflection effect on the cliffs, blending with the turquoise water, creating a very attractive sight.
The Waitomo Glowworm Caves on the North Island of New Zealand are famous for their countless glowworms that emit a magical light.
The Batu Caves system in Malaysia consists of three large caves and many smaller ones scattered across a limestone ridge approximately 400 million years old, located about 13km from the city. It is the holiest site for Hindus in Malaysia.
The Algarve caves were formed by the erosive action of sea waves on the rocks. This popular tourist attraction is located on a tranquil, pristine white sand beach in the far south of Portugal.
Vatnajökull Glacier is a cave formed from one of Europe's largest glaciers. This Icelandic cave attracts many explorers despite its inherent dangers due to the constant shifting and fracturing of the glaciers.
Tham Lod is one of the largest ancient caves in Thailand, located in the city of Pang Mapha. It boasts some of the world's tallest stalactite columns, reaching 62 meters.
The only way for visitors to enter the cave is by boat, as the Nam Lang River flows through it. This cave in northern Thailand is home to hundreds of thousands of Pacific swiftlets.
Antelope Canyon in Arizona, USA, is also considered one of the most beautiful caves in the world. The towering rock formations were sculpted by nature over thousands of years through the continuous action of wind and flash floods.
Reed Flute Cave is a famous tourist attraction in Guangxi Province, China. The cave contains numerous spectacular and bizarrely colored stalactites and stalagmites. The abundance of reeds that grow there is the reason for the cave's name.
Ellison Cave in the United States, with its immense depth and unique vertical structure, has attracted many adventurous tourists. To enter the cave, visitors must descend using ropes or pulleys.
Phraya Nakhon is a cave discovered 200 years ago, possessing a mesmerizing beauty with shimmering streaks of light in the early morning.
This famous cave in Thailand attracts hundreds of thousands of visitors thanks to its ancient pavilion, built in 1890 to commemorate King Chulalongkorn's visit.
The Kyaut Sae caves in Myanmar were little-known, but they were recently renovated and transformed into a Buddhist temple.
The Mendenhall Glacier is part of a glacier near Juneau, Alaska. This ice cave possesses a mystical beauty of massive rock formations, illuminated by light in a multitude of colors.
The Naica Mine in Mexico contains numerous giant crystal formations within its cave. Today, exploration is prohibited due to its depth, heat, and other potential dangers.
The Kamchatka Ice Caves in Russia are known not only for their harsh climate but also for their pristine natural landscapes. They are surrounded by the active Mutnovsky volcano, which erupts on the surface.
The icy surface shimmers with many colors because the ice layers are relatively thin, so when the sun's rays shine down, they create a dazzling effect.
