Which volcano has produced the largest known lava flow on land?
Quick Answer
The Columbia River Basalt Group in the northwestern United States produced some of the largest known lava flows on land. These fissure eruptions covered an enormous area with basalt over millions of years.
The Full Story
The largest known lava flows on land are associated with the Columbia River Basalt Group, which erupted mainly about 17 to 6 million years ago in what is now Washington, Oregon, and Idaho. Rather than a single cone volcano, this was a giant flood-basalt province fed by fissures. The lava covered roughly 210,000 square kilometers in repeated flows. These eruptions are among the largest volcanic events in Earth’s recent geologic history.
Key Facts
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Suggested video title for this topic:
"Not a cone, but a lava superhighway: the biggest lava flows on land."
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