The most common type of flow is pillow lava, named so after its unusual shape.
From the en.wikipedia.org
However, pillow lava can also form when lava is erupted beneath thick glacial ice.
From the en.wikipedia.org
Advancing lava flows into this crust, forming what is known as pillow lava.
From the en.wikipedia.org
The most common underwater flow is pillow lava, a circular lava flow named after its unusual shape.
From the en.wikipedia.org
Pillow lava is abundant along the bases the flows, some of which are underlain by hyaloclastite breccia.
From the en.wikipedia.org
It consists of pillow lava, massive lava flows, sediments made from volcanic fragments, and chert breccia.
From the en.wikipedia.org
At first the eruptions resemble those that occur in the deep sea, forming piles of pillow lava at the base of the volcanic structure.
From the en.wikipedia.org
Pillow lava, for example, which usually forms on the ocean floor, is sometimes found high atop mountains in British Columbia and Iceland, and in the Antarctic.
From the sciencedaily.com
Underwater action scene of robotic mechanical arm on the JASON2 submersible collecting a pillow lava sample from Mauna Loa volcano at 10,000 feet below sea level during 2002 expedition.