In the arid landscape of Arabia, archaeologists don’t usually find a lot of artifacts. The heat dries organic matter, making it fragile and unlikely to preserve. However, researchers found an unexpected ally in a lava tube. According to a recent study, humans have been taking refuge in this lava tube for over 7,000 years, leaving behind numerous artifacts and art pieces. Lava and ancient shepherdsA lava tube is a natural tunnel-like formation. The top part of the lava flow cools down and solidifies, while the molten lava beneath continues to flow beneath this hardened crust. This creates a hol…