Cartography 1:5.000 (BTB) of Biscay

• 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.