There is errors in this BaseMap (Open Street Map). In the content, specifically in the South Zone en Chile, appear one seccion called: "Acuerdo de Campos de Hielo". This is wrong! The accord should be called: "Acuerdo de 1998" For more information about this, please visit the official site: http://www.difrol.gob.cl/comunas-fronterizas/region-de-magallanes-y-de-la-antartica-chilena.html . And also: http://www.difrol.gob.cl/doc_download/181-acuerdo-de-campos-de-hielo. Also, you find information in this link: http://www.difrol.gob.cl/argentina/acuerdo-para-precisar-el-recorrido-del-limite-desde-el-monte-fitz-roy-hasta-el-cerro-daudet.html