3 ms·
You can read about what happened to the London underground over the years. Except the process has been sort of reversed: there was heat being introduced into t
by antisthenes 4y ago
You can read about what happened to the London underground over the years.
Except the process has been sort of reversed: there was heat being introduced into the deep layers of clay and rock.
https://en.wikipedia.org/wiki/London_Underground_cooling https://en.wikipedia.org/wiki/London_Underground_cooling