Earth Snapshot had a few volcanoes of the big island in its Earth Image of the Day:

The island of Hawaii is home to five volcanoes, three of which can be observed here in this orthorectified image. These are, clockwise from the upper right, Mauna Kea, Mauna Loa and Hual?lai.

Mauna Kea is a dormant volcano in the post-shield stage of volcanic evolution. Its peak is 13,803 feet (4,207 m) above sea level but 33,476 feet (10,203 m) above its base on the floor of the Pacific Ocean, making it the world’s tallest mountain by this measure. The rounded formations on its flanks are various cinder cones.

Mauna Loa is an active shield volcano, with a volume estimated at approximately 18,000 cubic miles (75,000 km³). Its peak, with an elevation of 13,679 feet (4,169 m), is about 120 feet lower than that of Mauna Kea.

Hual?lai is a dormant shield volcano with a peak at 8,271 feet (2,521 m) above sea level, much lower than those of Mauna Kea and Mauna Loa. Although Hual?lai is not nearly as active as nearby Mauna Loa, geologic mapping of the volcano shows that 80 percent of Hual?lai’s surface is covered by lava flows no older than about 5,000 years.

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Read about Orthophotography here