Deposit of Tower of Dona Blanca, in Puerto de Santa Maria, Cadiz.
Close to Guadalorce river mouth, by Saint Cristobal rock on the top of a little tableland, stands this Phoenician city founded at 8th century b.C. Near to this place there were different settlements. Therefore searching excavations are made often at different levels.
It is a very important deposit since this Phoenician city that evolutioned for 6 centuries is very well preserved. There are remainings of many constructive phases. That can be easily seen on the three different walls built:
A first wall was built as soon as the Phoenician colony was set at 8th century b.C. Its walls are made of masonry and little stones, filled with mortar. Intermitently there are "pillars of ashlar" in order to make sure the whole construction. It is supported by a "basement" of clay. A running half-boot of masonry of 1 m. high supported the wall made of stones joined by clay. A little section of ca. 6 m. with a circular bastion, with walls of 1,30 m. wide, divided into internal rooms full with earth and rubbish is preserved. There are also remainings of a ditch of ca. 3 m. deep.
At 5th century b.C. a second wall was built. On a new plan, it is constructed with two parallel walls joined by perpendicular little walls. They form inner rooms -casamatas-. Scholars proved a watchtower existed and other two inner towers at the door of the city. They are all built with big ashlars. It is done with a very high quality: stones are big and well worked. They are disposed with files of stone combined with flat stone. It is directly fixed on the floor without any basement.
To finish, there are remainings of a third wall built at 5th and 3rd centuries b.C. This time, some parts of the prior wall were used in small sections of this one. Constructive system is similar: two walls of 1,10 m. and 0,90 m. wide -inner and outer-, and cellars. It is built with little ashlars well fit joined with red clay. There are many towers with a rectangular plan -9 x 10 m.- with a regular frequency. This wall has good basements.
At the village the first houses of 8th century can be found at the port area. They are built on the side of a mountain disposed as artificial balconies. They have 3 or 4 rectangular rooms. Plinths are made of stone and masonry; walls of adobe. They are covered with lime on a surface of clay. There are wooden covers with straw and floors with red clay.
The city was left from Roman conquest up to Middle Ages. At 15th century a Tower was built. It was Dona Blanca de Borbon prison and gave its name to the deposit.