Ancient Roman pipe valve from Pompeii:
![[Image: Figure_1.JPG]](http://www.valvemagazine.com/images/article_images/Figure_1.JPG)
Since the Romans were engineers, building walls, colosseums, bath houses, and aqueducts everywhere they went, I wonder if they also added steam vents to volcanically active areas.
Since the Romans were engineers, building walls, colosseums, bath houses, and aqueducts everywhere they went, I wonder if they also added steam vents to volcanically active areas.
