The World's Largest Cave: It Has a Forest, a River, and Clouds Inside

We trekked through the jungle and neighboring caves before entering Son Doong, where we explored enormous passages, underground rivers, towering stalagmites, cave pearls, fossils, and rare wildlife. We camped inside the cave and visited its collapsed dolines, including a rainforest filled with tall trees, monkeys, snakes, insects, and more than 200 plant species. We then crossed water-filled passages and reached the Great Wall of Vietnam, completing our journey through the world's largest cave.