The volcanoes in question are known as large igneous provinces, large regions where magma wells up to the surface. No large igneous provinces are active today; the most recent, the relatively ...
But I have to imagine that some devs will be disheartened to see new features gated behind a paid tier, given that Google gave no indication it planned to charge for future enhancements to the ...
So, farewell, Timeline. Like most useful and unsung Google features, you were minor and hidden, but you helped me when I needed you and delighted me with your simplicity and efficacy!