In 1980, in Almendralejo, Spain, it was discovered the Tomb of Huerta Montero, a megalithic funerary monument, the best preserved in the Iberian Peninsula, dating from the Chalcolithic (Copper Age, about 4650 BC). According to the opinion of archaeologists, it is quite probable that there are similar buried monuments in the vicinity of the known tomb. This suspicion led to the geophysical study, carried out with the aim of identifying new structures in the vicinity of the necropolis discovered. The choice of geophysical method it was the GPR, because it is a non-invasive technique, accurate and rapid in its implementation. The results obtained allow us to conclude that there may be a structure of circular shape, with a diameter of about 7 m which may to correspond to a funeral monument as there are a few meters, with a temporal thickness ranging between 13 and 21 ns deep. In the northern part of the structure there are two protrusions that may match an entry in the building or even the rest of the tunnel entrance
