BTA mapping 1:5,000 (reference year 2020). Railway network site

BTA layer (reference year 2020) containing the surface elements of the railway tracks for the entire territory of Navarre 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.

BTA图层（参考年份为2020年）包含纳瓦拉全境比例尺1:5000的铁路轨道地表要素。BTA即“协调式地形基准（Harmonized Topographic Base）”的首字母缩写，是国家地理研究所（National Geographic Institute，缩写IGN）适配其国家制图基础库（National Cartographic Base，缩写BCN）生产流程的成果。该数据模型由各自治区（Autonomous Communities，缩写ACs）协商制定，并经高级地理委员会（Superior Geographical Council，缩写CSG）批准，现有2008年发布的v1版本。