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A group of six cinder and lava cones of Pleistocene-to-Holocene age is located in southern Armenia on the western slopes of the Vardeniss volcanic ridge, south of Lake Sevan.
The andesitic Dar-Alages volcano, also known as Daly-Tapa, formed in postglacial times (Sviatlovsky, 1959). The Vaiyots-Sar and Smbatassar pyroclastic cones of Holocene age (Karakhanian et al., 2002) are located in this part of the Vardeniss volcanic ridge. Vaiyots-Sar volcano lies just north of the major Areni-Zanghezour Fault, near the town of Vaik, and produced a fissure-fed lava flow several thousand years ago that dammed the Arpah River and flowed to the west for 6 km. The youthful-looking Smbatassar cinder cone is located 17 km to the NW and produced lava flows that traveled 11 and 17 km north and south, respectively.
Another extremely strong eruption sends bombs more than 500m, many towards the Bastimento and Pizzo and beyond. The outer slopes of the NE crater are completely covered w...
Sometimes, much more powerful explosions take place, throwing bombs all over the cone and beyond, dangerously close. (Photo: Tom Pfeiffer)
Alien landscape at Dallol (Photo: Tom Pfeiffer)
Ash falls from eruptions during the past weeks have been concentrated in a sector west of the volcano according to prevailing easterly winds. Much of the vegetation on th...
The lava fountain is relatively "cold" and much of the erupted magma is fragmented into dark ash. It is believed that this is caused by contact of the rising magma with l...
Powerful, vulcanian-type explosions throw blocks and bombs all over the cone and beyond, often reaching the old crater rim and the forest. (Photo: Tom Pfeiffer)