Geysers, with hot water and steam welling up from deep underground, are mysterious clues to what lies beneath. Yellowstone National Park includes about half of all geysers found on Earth. The Andes Mountains contain a major geyser field, named El Tatio, in northern Chile......I recently dug around for more information about geysers – and I found some that was new news to me and, I think, quite interesting.
The dramatic landscape of Yellowstone National Park, including exploding geysers, bubbling mud volcanoes, and rainbow-colored lakes, all provide hints of the dynamic geologic history of the region. Yellowstone is one of the Earth’s largest volcanic systems, and earthquakes, ground surface movements, and hydrothermal activity in the region are all indications of this volcanism.
Maize (aka corn) was considered a sacred plant by the Inca, Tiwanaku, Moche and many other ancient Andean cultures. In the Andes Mountains, for millennia the principal use of this plant has been to make an alcoholic beverage called chicha. This beverage was so important to the social and economic functioning of ancient Andean societies that when there was a major disruption in the flow of maize, it helped to trigger the collapse of at least one society that had flourished for hundreds of years.