The volcano known as La Cumbre Vieja shot out a so-called lava bomb earlier this week. Lava bombs are masses of molten rock, ejected from volcanoes, that cool before they hit the ground. When this one finally came to rest, some intrepid observers got an up-close look. The ‘bomb’ was still red-hot inside. La Cumbre Vieja, which is on the island of La Palma in Spain’s Canary Islands, has been erupting since September 19th.