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.
Harrat ar Rahah is the northernmost of a series of young basaltic volcanic fields in western Saudi Arabia arranged parallel to the Red Sea. It is located south of the Plain of El-'Hisma, south of the town of Tabuk.
The field contains mainly large olivine-bearing basalt lava flows that were erupted from fissures. The age of the last eruptions is unknown, but probably less than 10,000 years.
Mayon volcano photos: Mayon on Luzon Island, towering above Legazpi city is famous for being one of the most perfectly symmetrical stratovolcanoes in the world. It is also one of the most active and most dangerous volcanoes (not only) in the Philippines.
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