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why don't they just use volcano craters? Because volcano craters don't go to the mantle. Here's a sketch of how the crust, mantle, and volcanoes look like: Tan colour is crust, orange is mantle. Your question may come from the misconception that the mantle is molten, but it is actually not. It's solid, except for very localised cases where the mantle is ...


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I am not a geologist, but my understanding is as follows: volcanoes may be felsic or mafic. The latter type gets its 'fuel' from hotspots from within the mantle. These volcanoes are located at plate boundaries, where the crust is thinner. If the question is 'why can't we send a probe down such a hotspot volcano into the mantle' - I'm not sure why that'd be ...


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