Simplify the following text for a Grade 10 native English-speaking person.
Original: It was considered a divinity of the genius type at the time of the eruption of 79 AD : it appears under the inscribed name Vesuvius as a serpent in the decorative frescos of many lararia , or household shrines , surviving from Pompeii .
Simplified: A serpent called `` Vesuvius '' has been used in frescos of many lararia ( household temples ) from Pompeii .