Mauna Loa, the world's largest active volcano, is the mighty giant of Hawaii that's still bubbling away, waiting to be explored.

A key site that monitors global carbon-dioxide emissions went offline for maintenance and will return later Wednesday, ...

With its beautiful beaches, rainforests, volcanic mountains, and lava deserts, the island of Hawaii is the perfect road trip ...

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The USGS Hawaiian Volcano Observatory spearheads Volcano Awareness Month each January on the Island of Hawaii. This year, in ...

There are two active volcanoes in Hawai'i Volcanoes National Park, Mauna Loa and Kilauea, but Kilauea is the real "must-see." A 4,000-foot-tall mountain, Kilauea has been active since Jan. 3 ...

She wrote that it shows “an ancient eruption of Mauna Loa where the lava flowed from the mountain to the sea. The glow rises from the vapors of the lava touching the waters of the ocean.

Mauna Loa is not far behind with a peak at 13,677 feet above sea level. Mauna Kea is the world's tallest mountain when measured base to peak, as its base extends nearly 20,000 feet below sea level.

What was a blistering rain and windstorm for much of the tropical paradise was a major winter storm for the BIg Island’s mountain peaks. A Winter Storm Warning for the Mauna Kea and Mauna Loa ...

What was a blistering rain and windstorm for much of the tropical paradise was a major winter storm for the BIg Island's mountain peaks. A Winter Storm Warning for the Mauna Kea and Mauna Loa summits ...