The basalt cliffs are the product of several massive lava flows hundreds of feet deep that welled up in faults created by the rifting apart of North America from Eurasia and Africa.

There are massive lava lakes all around the planet.

This basalt ridge is the product of several massive lava flows hundreds of feet deep that welled up in faults created by the rifting apart of North America from Eurasia and Africa over a period of 20 million years.

The basalt (also called traprock) crest of the Metacomet Ridge is the product of a series of massive lava flows hundreds of feet thick that welled up in faults created by the rifting apart of the North American continent from Eurasia and Africa.

This related Pleistocene age subglacial volcano consists of alkaline basalt and erupted mainly pyroclastic breccia with minor amounts of massive lava, pillow lava, volcanic sandstone and hyaloclastite.

The group escapes through another entrance, and, just as they emerge, the volcano erupts, spewing massive lava flows that destroy all the wasps in the conflagration.

The hotspot, which now lies beneath Yellowstone National Park, deposited massive lava flows throughout the plain.

It is flanked to the northwest by 24 monogenetic parasitic cones, an area blanketed by massive a lava flows.

It consists of pillow lava, massive lava flows, sediments made from volcanic fragments, and chert breccia.

The massive lava flows drained towards the sea, following the routes of ancient river beds, and while the surface of the lava cooled and hardened, hot lava continued to race through the centre of the flows, eventually leaving enormous basalt tubes.