Photo of the Week (Week 43: Mon 19 Oct - Sun 25 Oct, 2015)
Rare Hauyn crystal (5 mm in diameter) found in a pumice quarry near Mendig, Eifel region, Germany (Photo: Janka)
More on VolcanoDiscovery
1-3 day excursions
: If you're interested in volcanoes, there are a number of excursions you should not miss if you're in the area: hike to the craters of Stromboli volcano, climb Etna volcano, get to know the unique volcanic history of Santorini - some examples of shorter (1-3 days) tours and excursions we offer.
Worldwide earthquake activity level
: What is the level of global earthquake activity today compared to the past? Find out with our graph showing the current and past Global Seismic Activity Level indicator!
Volcanoes & Earthquakes
: Upgrade the Volcanoes & Earthquakes app!
Once installed for a tiny one-time cost, it unlocks additional features, removes ads in the free version of the app.