Six kilometres west of Gandesa, on the edge of the N-420 road to Calaceite, is an archaeological area known as the Coll del Moro. It actually consists of two sites: a fortified settlement and a necropolis of tumuli (which in turn is divided into three different sectors). The area occupies a series of small hills rising over the surrounding land in a clearly dominant position.

Its location with respect to the lines of communication that join the coastal plain with Lower Aragon means that you have to pass the Coll del Moro if you travel from the coast inland along the Ebro Valley.

The settlement dates from Iberian times and consists of a 3,350 square-metre fortified area. Several archaeological digs were carried out between 1971 and 1976 and in 1982 the site was purchased by the Catalan Autonomous Government. Since then, continuing excavations have considerably increased our knowledge of it. Studies carried out on the tower (the most notable and characteristic element of the settlement) and its adjoining pit suggest that it dates from the beginning of the 5th century BC. Some materials have, however, been found out of context and these may put back the initial date of occupation to around 600 BC. The settlement's second line of defence, made up of three bastions, was destroyed towards the end of the 3rd century BC or during the first half of the 2nd century BC.

The necropolis was discovered and partially excavated in 1953. The excavations carried out between 1971 and 1974 and between 1984 and 1991 appear to confirm that it dates from between 800 and 450 BC.

The discovery of different archaeological materials of a chronology reaching up to the 4th century BC suggests the possibility of a relationship with the nearby settlement and a coexistence between the latter period of the necropolis and the earliest period of the settlement.