Mauna Loa, USA
Mauna Loa,
the largest volcano on Earth, is in the shield-building stage and is
one of the most active volcanoes on Earth, erupting 15 times since 1900.
The last eruption was in 1984 and sent lava flows within 4 miles (6.5 km)
of Hilo. Photo of the upper Northeast Rift Zone and summit caldera of
Mauna Loa.
Photo courtesy of Peter Mouginis-Mark of Virtually Hawaii.
Additional Sources of Information:
The Official Mauna Loa homepage
To VolcanoWorld