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（基准年份为2020年）涵盖纳瓦拉全境1:5000比例尺下的铁路轨道地表要素。BTA是适配国家地理研究所（National Geographic Institute, IGN）国家制图基准（National Cartographic Base, BCN）生产流程的数据集版本，其全称为"统一地形基准（Harmonized Topographic Base）"。该数据模型由各自治区（Autonomous Communities, ACs）协商制定，并经高级地理委员会（Superior Geographical Council, CSG）批准，现有2008年发布的v1版本。