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| Stromboli (Italy) | Etna (Italy) |
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| Vulcano (Italy) | Lipari (Italy) |
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| Vesuvius (Italy) | Tenerife (Canary Islands, Spain) |
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| Acores (Portugal) | Santorini (Greece) |
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| Cappadocia (Turkey) | Nyiragongo (Dem. Rep. Congo) |
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| Erta Ale and Dallol hot springs (Ethiopia) | Ol Doinyo Lengai 2003 and 2001 (Tanzania) |
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| Guadeloupe (Lesser Antilles) | Martinique (Lesser Antilles) |
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| Mount St. Helens (Washington, USA) | Crater Lake (Oregon, USA) |
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| Sakurajima (Japan) | Yasur (Vanuatu) |