Summary of the geologic history of Mt Hood volcano
The graphic has been taken from the USGS Open File Report 97-89 VOLCANO HAZARDS IN THE MOUNT HOOD REGION, OREGON.
More on VolcanoDiscovery:
: Our signature tours for small groups: Discover volcanoes and volcanic areas from close with an expert in their field! These tours have a broad mix of activities and interests from photography, walking, study travel, nature & culture.
Volcano Calendar 2016
: We're proud to present our new volcano calendar 2016: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
Ambrym+Yasur volcanoes in Vanuatu
: An adventurous expedition to some of the most spectacular and active volcanoes in the world! Our volcano expedition to Vanuatu lets you spend 1 week on Ambrym with its multiple active lava lakes and 4 days on Yasur, famous for its spectacular fireworks. Guided by professional volcanologist, small groups (May-Sep).