Puerto de la Laja (El Granado, Huelva) is an ancient loading dock built in 1858, located on the left bank of the Guadiana river. It was used for transporting minerals and machinery from the Santa Catalina, La Isabel, and Cabeza de Pasto mines, and the Las Herrerías mine from 1905. It was declared a Site of Industrial Interest on February 22, 2011.