Behind the alternating rocky and sandy coastline , from the marble quarries of Carrara , the mountain chain of the Apennines reaches south into Tuscany where lie the ageless beauties of Pisa , Lucca , Florence , and Siena , not to mention the smaller , and arguably more magical , hillside towns of Montepulciano , Volterra , and San Gimignano .
There are marble quarries in Carrara .