Stratovolcano
People living around Semeru Volcano, Indonesia, have been put on alert for a potential eruption. Indonesia's Centre for Volcanology and Geological Hazard Mitigation has put the volcano on level 3 (of 4) alert and said "not to conduct activity at a radius of 4 kilometres from the crater, especially around the south-east of the volcano's slopes." There have also been reports of ash clouds (or steam) being vented from the crater.
Semeru is a very active volcano in a country full of active volcanoes. It has been erupting since 1967, quite a long span for any stratovolcano to be constantly…
Etna, one of Italy's (and the world's) most active volcanoes, has started erupting again. Saturday night the volcano erupted lava flows, although that is pretty much all the details in the article. The last series of major eruptions at Etna were last fall, but the volcano never tends to stay quiet for long. For those of you who want to take a peak, Etna has a nice live webcam.