Eruption, 79 9 History 3 Antiquities 2 Excavations (Archaeology) 2 Social life and customs 2 Time travel 2 Volcanoes 2 Aqueducts 1 Civilization 1 Discovery and exploration 1 Documentary television programs 1 Engineers 1 Historical fiction 1 Investigation 1 Murder 1 Natural disasters 1 Pompeii (Extinct city) 1 Rome 1 Secrecy 1 Spy stories 1 Tree houses 1 Upper class 1 Vesuvius (Italy) 1 Volcanic eruptions 1 Water supply 1