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This German city is built on an extinct volcano

The Hessian town of Amöneburg is situated on a 365-meter-high basalt cone left by an extinct volcano. It is located in a region that holds a European superlative in this regard. Traces from this era, ...
The Conversation

Humanity needs more rare earth elements. Extinct volcanoes could be a rich new source

Extinct volcanoes are hard to study – we never see them erupt. Using a unique experimental technique, we were able to recreate a certain type of extinct volcano in a lab, learning more about the magma ...
Discover Wildlife

It’s almost twice the size of Washington state and stretches 18 miles down into the Earth’s crust – and it’s underwater too

It measures 310,000 square kilometres (119,000 square miles) and its ‘roots’ extend around 30 kilometres (18 miles) into the Earth’s crust. (For comparison, the US state of Washington is 184,661 ...