Mapping BTA 1:5,000 (reference year 2020). Middle-level curve of the southern half of Navarre

Layer of the BTA (reference year 2020) containing the normal curves at 5 meters of equidistance of the southern half of the territory of Navarre on a 1:5,000 scale. The BTA is an adaptation to the production of the National Cartographic Base (BCN) of the National Geographical Institute (IGN). BTA is the acronym for “Harmonised Topographical Base”. It is a data model agreed by the Autonomous Communities (CCAA) and approved by the Higher Geographical Council (CSG) of which there is a version v1 dated 2008.本数据集为基准年2020年的BTA图层，包含比例尺1:5000下纳瓦拉自治区南部半区的5米等高距标准等高线。BTA是适配西班牙国家地理研究院（IGN）国家制图基础（BCN）生产流程的数据集产品。BTA为"协调统一地形基础（Harmonised Topographical Base）"的缩写。该数据模型由西班牙各自治社区（CCAA）商定，并经高级地理委员会（CSG）批准，其首个版本v1发布于2008年。