Dry stone constructions have traditionally been made only from geographically close materials. Usually, farmers and shepherds used stones in the soil of their farmlands, where they were useless, to build new useful structures directly related to their productive activities.

Different types of stones allowed a wide variety of constructions. Furthermore, due to their origin related to economical activities, the presence of each kind of construction depends on the needs of the local people. So, these are the reasons why, regarding shape and utility, in each town is possible to find different dry stone buildings.
We hypothesized that there could be a clear relation between the information from types of stones in geological maps of a region and the dry stone constructions present in that region, so we could make a first prediction of the possible dry stone constructions in a town before looking them in the field, using geological maps.

In this paper, we confirm this hypothesis in the case of the Catalan region of Penedès, in Spain.