Astronaut's Haunting Encounter: Skull-Like Image Stares Back from Earth's Volcanic Pit

An astronaut aboard the International Space Station captured an astonishing photo of a massive skull peering up from a volcanic pit in Trou au Natron, northern Chad. The "face" is formed by shadows from the rim of a caldera, while the "eyes" and "nose" are cinder cones. The white area around the "mouth" is a mineral crust made of natron, a salt formed by evaporating hot spring water.