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Volcano Calendar 2019
Volcano Calendar 2019: We're proud to present our 2019 volcano calendar: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
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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.
Guaranteed tours:
30 Mar - 6 Apr 2019: Land of Theseus - Saronic Gulf (Greece)
2-17 May 2019: From Krakatau to Bali - Java (Indonesia)
4-11(12) May 2019: Fascination Volcano - Santorini Island (Greece)
4-12 May 2019: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
18-26 May 2019: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
25 May - 1 Jun 2019: Etna Discovery - Etna volcano (Italy)
7-12 Jun 2019: Adventure Volcano - Yasur Volcano Travel - Tanna Island (Vanuatu)
15-30 Jun 2019: From Krakatau to Bali - Java (Indonesia)
8-23 Jul 2019: From Krakatau to Bali - Java (Indonesia)
3-18 Sep 2019: From Krakatau to Bali - Java (Indonesia)
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Harrat Rahat volcano

volcanic field 1744 m / 5,722 ft
western Saudi Arabia, 23.08°N / 49.78°E
Current status: normal or dormant (1 out of 5) | Reports
Harrat Rahat volcano books
Typical eruption style: effusive
Harrat Rahat volcano eruptions: 1292 (?), 1256, 641 ADNo recent earthquakes
TimeMag. / DepthDistanceLocation
Harrat Rahat is Saudi Arabia's largest lava field and comprises an area of 20,000 sq km, extending for 300 km at an average width of 60 km south of the holy city of Al Madinah (Medina).
Historic eruptions have occurred near Medina, notably one in 1256 AD.

Background:

The field which is progressively younger towards the north contains mostly basaltic scoria cones and lava flows reaching up to 100 km from the rift axis. However, the volcanic field also erupted some more silicic trachy-basaltic to trachytic magmas, which formed small lava domes with associated pyroclastic-flow and -surge deposits.

1256 AD eruption
The best-known eruption of Harrat Rahat was in 1256 AD and produced about 500 million m3 of lava flows from 6 vents aligned on the eruptive fissure. The lava flows traveled 23 km and came to within 4 km of Medina.

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More on VolcanoDiscovery:

Glossary
Volcanology photo glossary: A short illustrated dictionary of volcanic terms and features.
Earthquakes
Earthquake monitor: Lists and maps of earthquakes in the world in near real time. Country lists, earthquake archive, and I-felt-it reports.
Saronic Gulf
30 Mar - 6 Apr
Land of Theseus: A relaxed walking and study tour to one of Greece's hidden treasures and also one of the least known volcanically active areas in Europe.
Batu Tara
Batu Tara photos: A remote island in the Flores Sea of Indonesia formed by a single volcano that has been in strong strombolian eruption for years. We regularly lead expeditions to there where we camp several days to observe it.
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