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.

Uturuncu, standing over 19,700 feet high, is a stratovolcano - a large, cone-shaped volcano composed of layers of hardened lava, volcanic ash, and rock. Other examples of stratovolcanoes include ...

You can see that shape in the profile shot of the volcano (taken from the Earth's surface; below) with steep slopes. The average slope heading up the sides of the volcano are ~25 percent with a ...

Lava fountains bursting from the cone-shaped volcano overnight rose 650 feet in the air, the institute said.

He was looking for more of those earthworks by surveying valleys north of Lima when he spotted the volcanic cone that stands 50 feet tall (15.5 meters). [In Photos: Earthly Mounds Shaped Like Animals] ...

This was one of many times that the volcano has erupted throughout the past 500 years, but it remains a popular draw for tourists thanks to the cone shape that inspired the designer. As for the ...

After being quiet for 110 years, the cone-shaped Momotombo volcano in Nicaragua rumbled to life on Dec. 1. A haze of smoke continues to emanate from the volcano's crater.

It's easy to see how ice volcanoes earned their nickname. NWS Grand Rapids posted a close-up photo that shows the cone-shaped ice with an explosion of slushy water spitting out of the top.

Mauna Loa is a shield volcano. So are most of the much smaller volcanoes in Iceland. (Cone-shaped volcanoes, like Mount St. Helens, aren't shields but "stratovolcanoes.") ...

As it happens, over the course of hours or days, it forms a cone and it resembles a volcano." According to Spholten, there have to be very specific conditions for the ice volcanoes to form.