Watch a waterfall suck swimmers through a rock into a cave

Pedra Que Engole means "swallowing rock," an accurate name for a small Brazilian cave accessible only via waterfall. Read the rest

Explore the world's largest cave, including 360-degree video

YouTuber Oxalis shared Ryan Deboodt's gorgeous footage of the world's largest cave, Vietnam's Hang Son Doong. Read the rest

Mesmerizing footage of Yucatan cave diving

Jonas Pedersen captured the beauty and danger of cave diving in this haunting footage at El Toh. Read the rest