Mauna Loa is purported to be the largest active volcano on Earth. There is more lava bubbling away under this behemoth than any other volcano. Mauna Loa’s size is not entirely obvious from the 4,170 m (13,680 ft) peak but when you take into account that it rises up from the sea floor it is actually taller than Mount Everest. As a shield volcano Mauna Loa is a bit of a gentle giant. Instead of exploding dramatically these volcanoes tend to spew out constant streams of magma forming shallow slopes. These lava flows are generally slow moving and possess little danger, except to property.