Simplify the following text for a Grade 10 native English-speaking person.
Original: Though the entire subterranean network of Paris ' mines is not a burial place as such , the term ` Catacombs ' is commonly used to refer to the whole .
Simplified: Though the entire network of Paris ' mines is not a burial place as such , the term ` Catacombs ' is commonly used to refer to the whole network .