Then, the pillow lavas also collapse, giving an angle of 37.5 degrees .

There are also the remains of a submarine volcano with pillow lava.

The most common type of flow is pillow lava, named so after its unusual shape.

In this phase, the volcano continues to erupt pillow lava.

Its upper section is made up of pillow lavas.

These stretch right to the coast, although Pentire head is composed mainly of pillow lavas.

These lumps can become somewhat rounded through rolling and they are piled up on top of each other to create pillow lava.

Stóra-Björnsfell's pillow lava appears originally to have erupted from a fissure.

A series of pillow lavas were also deposited during this eruptive period.

It also used to be thought that pillow lavas could form only at great depths below the surface.