Full glossary

Wai Sano is a 3.5x2.5 km wide caldera at the western end of Flores Island. It contains a crater lake 260 m below the highest peak of the rim, Mt Umpu Rua peak, and the SE caldera wall is truncated by the slopes of 1632-m-high Gunung Cerak.
Although no historic activity is known from Wai Sano, it is believed to have erupted in the past 10,000 years. Two mildy active fumarole areas are located on SE shore of the lake.

The Wapi lava field, SE of the Craters of the Moon, Idaho, is a low shield volcano that formed during an eruption about 2250 years ago, which produced about 6 cubic km of fluid pahoehoe lava flows. It covers about 325 km2, and consists of a low shield volcano, which partly overlaps the nearby Craters of the Moon lavas.

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The Wells Gray-Clearwater volcanic field is located in the Quesnel Highland of east-central British Columbia, Canada. The volcanoes are basaltic cinder cones and their lava flows. The latest eruption took place from Kostal cone about 400 years ago, thus being one of the most recent volcanic eruptions in Canda.

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Whangarei volcano (named after the nearby town of Whangarei) is a group of cinder cones and lava flows. Their age is not well known, and could be as between less than 10,000 and up to about 30,000 years ago.

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Wilis volcano in the eastern end of Central Java is an isolated volcano with no known historic eruption, although there is a report of an eruption in 1641 AD, but most likely this was an eruption from nearby Kelut volcano. Increased fumarolic activity was reported in 1885.

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Wayang-Windu is a large old lava dome with two peaks located immediately west of Kamojang volcano about 40 km S of Bandung.

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Wurlali volcano (also called Damar, Daam, Dammer) on Damar Island, Indonesia, 375 km NE of Dili, East Timor, is an andestici stratovolcano and the SW-most historically active volcano in the Banda arc. It has a 5 km diameter caldera and 2 craters at the active northern end of the caldera.
Hot springs occur southwest of the volcano near the beach. Fumaroles are present on the south flank and at the summit vents, where large sulphur deposits are found and being exploited. In places, liquid sulfur can be observed boiling in some of the vents.