Ruina montium
Ruina montium was an ancient Roman mining system. In this technique, miners would excavate narrow cavities down into a mountain, whereby filling the cavities with water would cause pressures large enough to fragment thick rock walls.[1]
References
- ^ Rossi, Cesare; Russo, Flavio; Russo, Russo (2009). Ancient Engineers' Inventions. Vol. 8. Springer. pp. 133–141. ISBN 978-90-481-2252-3.