Fountains of lava up to 200 feet high have been fired into the air from Hawaii's Mauna Loa, generating rivers of molten rock from the world's largest active volcano. (Credits: News18 Graphics)
The largest volcano on Earth by volume, Mauna Loa, whose name means Long Mountain, is larger than the rest of the Hawaiian islands combined. (Credits: News18 Graphics)
One of six active volcanoes on the Hawaiian islands, Mauna Loa has erupted 33 times since 1843. (Credits: News18 Graphics)
Mauna Loa has been showing signs of building to an eruption for years, according to the USGS, which said the ongoing eruption was visible from Kona, a town on the west coast of Hawaii's main island some 45 miles (72 kilometers) from the volcano. (Credits: News18 Graphics)