Original: Three main networks exist ; the largest , called the grand réseau sud ( '' large south network '' ) , lies under the Ve , VIe , XIVe and XVe arrondissements , a second under the XIIIe arrondissement , and a third under the XVIe , though other minor networks are found under the XIIe , XIVe and XVIe for instance .
Simplified: The Mines of Paris ( in French Carrières de Paris -- '' quarries of Paris '' ) are made up of a number of abandoned , underground mines under Paris , France , connected together by large chambers called galleries .