This dataset contain the broad band magnetotelluric (BBMT) data collected in the limit between the Axial and the South Pyrenean Zones along two different surveys (2006 the southern part of the profile and in 2019, the northern one). The study is focused on understanding the geometry at depth of La Maladeta batholit and surrounding area, since fundamental questions remain unclear about the basement and cover architecture, the geometry at depth of significant bodies as the Late Variscan intrusive granites and/or Triassic evaporitic accumulations in this part of the Pyrenees.