There should be shelter from wind and lava in its lee, as this was not a volcanic structure.

It provides exposures of internal volcanic structure, including a volcanic vent.

In several cases, newer volcanic structures have all but erased older ones.

It also contains a large number of small shield volcanoes and other volcanic structures.

Presently, the interior of the structure is occupied by diverse volcanic structures and four lakes.

Although there exist no volcanic structures, the region is vulnerable to the products from any central eruption on the island.

It is a unique volcanic structure with no counterpart on Earth or elsewhere on Mars.

The mountain is an ancient volcanic structure, circular in shape, that rises from flat surrounding plains.

Shiveluch is one of Kamchatka's largest and most active volcanic structures.

Rising 7,500 m above the ocean floor, it is regarded as the world's third-tallest volcanic structure and stands in a spectacular environment.