빛이 닿지 않는 곳: 동굴의 숨은 세계

A World Beneath Our Feet

Deep below the ground, a hidden world waits in complete silence. Caves are large empty spaces carved inside rock and stone. Some caves are small enough to crawl through in a single minute. Others stretch for many kilometers, twisting like tunnels beneath the hills. People have explored caves for thousands of years, yet many remain unmapped. Inside, the air stays cool and damp during every season. No wind blows here, and no birds sing in the darkness. What secrets could be hiding in a place the sun never reaches?

Long ago, caves gave people their very first shelter from storms. Families gathered inside them for warmth, safety, and a place to sleep. Today, explorers called cavers still climb into these openings with ropes and lamps. They map narrow passages that no human has ever entered before. Each new discovery reminds us how little we truly know.