Volcano Calendar 2019: We're proud to present our 2019 volcano calendar: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Pululahua is cut by a caldera, which is 5 km wide and irregularly shaped and covers an area of 19 km2. The caldera formed about 2450 year ago after a series of violent explosive eruptions. It is partially filled by post-caldera dacite lava domes, which rise to up to 480 m above the caldera floor, and is breached to the west along the Rio Blanco valley. There are several older lava domes on the eastern, SE and southern flank of the volcano as well. There is no historic activity, but radiocarbon-dated tephra layers witness frequent explosive eruptions in the past thousands of years. The latest known eruption occurred from vents near the lava domes in the caldera about 1670 years ago. It produced lava flows and pyroclastic flows.
Ijen volcano photos: Ijen volcano in East Java is famous for its turquoise acid crater lake and the large sulfur deposits that are being mined by local workers. At night, the scene is illuminated by ghostly blue flames, as sulfur ignites.
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