nalerroka is incorrectly written, and should be written as "malerreka" being its meaning:
nalerroka = malerrekaAlto Bidasoa or Malerreka is a region and a sub-area ( according to the zoning Navarra 41 20001; of the Foral community of Navarra (Spain ) belonging to the area of Northwest. This region consists of 13 municipalities and is part of the Merindad de Pamplona