QUITO, Ecuador (AP) -- Ecuador's Tungurahua volcano is poised for a major eruption, a volcanologist said Wednesday. Authorities last week evacuated 10 villages from its western slopes as a precaution.

This week has been a quite active one at Tungurahua. The Ecuadoran volcano has produced some impressive explosions that reached as high as ~7 kilometers (23,000 feet) and dusted ash across the region.

HUAMBALO, Ecuador (AP) – Ecuador's Tungurahua volcano has been putting on a dramatic show, spewing lava from a cauldron-like crater and launching towering clouds of ash and gas. The country's ...

Ecuador's Tungurahua volcano erupted on Wednesday, with a series of fiery explosions spewing ash and smoke 13,000 feet into the air. The volcano, which is 5,023 meters high, has been active since ...

The Tungurahua volcano is one of Ecuador's most active volcanoes. A collapse 3,000 years ago led to a widespread debris avalanche of moving rock, soil, snow and water.

The Tungurahua volcano has been active since August 19, 1999, following more than 80 years of dormancy. Danielle Elliot. Danielle Elliot is a freelance science editor and reporter for CBS News.

QUITO, Ecuador — Ecuador’s Tungurahua volcano shot columns of ash six miles into the air yesterday, as officials ordered the evacuation of 3,000 villagers living near its slopes. Some 1,000 villagers ...

QUITO, Ecuador (AP) — Repeated explosions are rocking Ecuador's Tungurahua volcano, which is also shooting out chunks of molten rock. The country's National Geophysics Institute says that a ...

The volcano which stands at over 16,000 awakened last month. ... The Tungurahua volcano spews a column of ash as seen from Ambato, Ecuador, Friday, April 4, 2014.

Tungurahua volcano has been active frequently since 1999. About 3,000 years ago, an eruption caused a partial collapse of the same side of the volcanic cone that is beginning to collapse again now.