3D electrical prospection in the archaeological site of El Pahñú, Hidalgo State, Central Mexico

► An ERT-3D survey was carried out in El Pahñú archaeological site, Central Mexico. ► A new combination of electrodic arrays is proposed. ► Electrodes were set around the perimeter of the archaeological structures. ► High resistivities beneath the Main Pyramid could be associated with weak infill. ► Data beneath the Tecpan represent different occupational times.