On 1 October 2005, the Santa Ana, also known as the Ilamatepec Volcano, erupted for the first time since 1904. The eruption reportedly shot out car-sized lava rocks and a flood of boiling mud and water. This false-colour image was made from data collected by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite on February 3, 2001, well before the 2005 eruption. The volcano has a large flat-topped mound and sports several crescent-like craters at its summit and a 20-kilometre-long system of fissures. A tiny blue spot in the center of the inner-most crater is a crater lake, the likely source of the boiling water flood. Santa Ana is the highest point in El Salvador. The volcano is 2,381 meters (7,812 feet) above sea level and is 65 kilometers (40 miles) west of the country's capital, San Salvador.
© National Aeronautics & Space Administration / Science & Society