Lava domes are rounded, steep-sided mounds built by magma that is highly resistant to flow, usually either dacite or rhyolite. Such magmas are typically too viscous to move far from the vent ...

Cinder cones are simple volcanoes that form where vents, or openings, spit out ash and lava. They can be cone- or oval-shaped, usually with a bowl-like crater at their summits. When a cinder cone ...

According To Chefs To make your onion volcano, follow the technique used by all the best hibachi restaurants in the U.S. Per chef Steve, start by peeling a dome-shaped onion and cut it in half.

Volcanic mountains come in diverse forms, each shaped by unique geological processes ... Created by slow eruptions of viscous ...