The 1:5000 scale cartography or Biscay Topographic Base (BTB) is a set of topographic vector data. It was generated on the basis of a 25 cm photogrammetric flight carried out by the Basque Government in the summer of 2021. The mapping was carried out by means of photogrammetric restitution, updating the layers of the following subjects: geographical names, transport, hydrography, relief, land cover, buildings and services and facilities. Information relating to the Foral Road Network of February 2022.
Provincial Council of Bizkaia
Last Modified March 06 2025
