None of them are English words!? ☺

Well, this may sound funny, but because i really dont know the answer, so i think (: that the letter (a) is in common between them. Well, i wanted to answer this because i asked once a question and you answered me. i want to say "thank you" for making me less worried about what is happening to me. Do you remember my question? well, not a big deal. but i will be pleased so much if you agree to contact me.

They are all killer volcanoes!

volcanic activity 1) "Mount Awu is the largest volcano in the Sangihe chain. Powerful eruptions occurred in 1711, 1812, 1856, 1892 and 1966 with devastating pyroclastic flows and lahars that have resulted in over 8,000 fatalities altogether. A 4.5 km wide of crater is found at the summit and a deep valley forms a passageways for lahars, splitting the flanks from the crater." Source and further information: http://en.wikipedia.org/wiki/Mount_Awu 2) "The Mayon Volcano is an active stratovolcano in the Philippines on the island of Luzon, in the province of Albay in the Bicol Region. The near perfectly cone shaped volcano is situated 15 kilometres northwest of Legazpi City. Mayon Volcano is one of the candidates of the New 7 Wonders of Nature. Mayon is classified by volcanologists as a stratovolcano, or composite volcano. Its symmetric cone was formed through alternate pyroclastic and lava flows. Mayon is the most active volcano in the country, having erupted over 47 times in the past 400 years." Source and further information: http://en.wikipedia.org/wiki/Mayon_Volcano 3) "Laki or Lakagígar (Craters of Laki) is a volcanic fissure situated in the south of Iceland, not far from the canyon of Eldgjá and the small town Kirkjubæjarklaustur, in Skaftafell National Park. Laki is part of a volcanic system, centering on the Grímsvötn volcano and including the Eldgjá canyon and Katla volcano, and lies between the glaciers of Mýrdalsjökull and Vatnajökull, in an area of fissures which run in a south-west to north-east direction. In AD 934, the Laki system produced a very large volcanic eruption, as a flood basalt in the Eldgjá eruption, which released 19.6 cubic kilometres (4.7 cu mi) of lava. In 1783-1784, the system erupted again, from the Laki fissure and the adjoining Grímsvötn volcano, pouring out an estimated 14 km3 (3.4 cu mi) of basalt lava and clouds of poisonous fluorine/sulfur-dioxide compounds that killed over 50% of Iceland's livestock population, leading to famine which killed approximately 25% of the population." Source and further information: http://en.wikipedia.org/wiki/Laki