article_snippet.sent: The wondrous Tham Khoun Ex caves are so exquisite
article_snippet.sent: The wondrous Tham Khoun Ex caves don't look real at first, which is perhaps why locals believe that spirits inhabit the underground wonderland.
article_snippet.sent: Enormous banks of terraced flowstone decorate the walls of The Tham Khoun Ex cave in many places.
article_snippet.sent: Rippling reflections: A blue-tinted glow from outside illuminates the entrance chamber of The Tham Khoun Ex cave .
article_snippet.sent: Tham Khoun Ex caves, commonly known as Xe Bang Fai River caves, feature imposing stalagmitemade of mineral deposits.
article_snippet.sent: Everything about The Tham Khoun Ex cave is big-from Everything about the cave towering entrances to Everything about the cave phobia-inducing spiders, which can be 10inches across,' John Pollack told National Geographic.
article_snippet.sent: The upstream inflow entrance of Tham Khoun
article_snippet.sent: Massive formations abound in a newly discovered fossil section of The Tham Khoun Ex cave, 50 metres above the river level.
article_snippet.sent: The immense proportions of Tham Khuon Xe, one of the worldís greatest river caves, are difficult to photograph.
article_snippet.sent: Visitors to Tham Khuon Tham Khuon
article_snippet.sent: Sunlight streams into the mist-filled fossil passage near the sink of the Xe Bang Fai River.
article_snippet.sent: A cave explorer amongst giant stalagmites in the Stairway to Heaven area of The Tham Khoun Ex cave. 
article_snippet.sent: The Tham Khoun Ex cave is formed by the Xe Bang Fai river, a major tributary of the Mekong .