Son Doong, crowned as the largest cave on Earth in 2009, continues to capture global attention. However, it’s not the only gem in Phong Nha’s incredible collection of caves. For instance, what do drooping dragon claws and bulging broccoli sprigs have in common? You’ll find formations resembling both in the Tu Lan cave system, one of Vietnam’s most diverse subterranean worlds. The Tu Lan cave system is interwoven by a network of streams that have sculpted the countryside over millions of years, resulting in a collection of distinctly unique caves. This expansive series of caves forms the perfect playground for the Wild Tu Lan Explorer tour, a thrilling three-day adventure offered by trekking Adventure Tours