China’s Miao Room is considered the world’s second largest cave chamber by area. Enormous and dark, it’s a challenging place to map—but equipment worth more than $100,000 captures what the eye cannot…
Amazing 3-D Tour of a Chinese Supercave
China’s Miao Room is considered the world’s second largest cave chamber by area. Enormous and dark, it’s a challenging place to map—but equipment worth more than $100,000 captures what the eye cannot…
