BTA mapping 1:5,000 (reference year 2020). Master Level Curve

Layer of the BTA (reference year 2020) containing the master curves at 25 meters of equidistance, steep and slopes for the entire territory of Navarra at 1:5,000 scale. The BTA is an adaptation to the production of the National Cartographic Base (BCN) of the National Geographic Institute (IGN). BTA is the acronym for "Harmonized Topographic Base". It is a data model agreed by the Autonomous Communities (ACs) and approved by the Superior Geographical Council (CSG) of which there is a v1 version dated 2008.