Editing Bilbao (section)

=== Location ===
Bilbao is located near the northern edge of the [[Iberian Peninsula]], about {{convert|16|km|mi|0}} from the [[Bay of Biscay]].<ref>[[#ria98|Montero 1998]]: 37.</ref> It covers an area of {{convert|40.65|km2|sqmi}}, of which {{convert|17.35|km2}} are urban and the remaining {{convert|23.30|km2}} consist of the surrounding mountains.<ref name="district demography">{{cite web | url = http://www.bilbao.net/castella/relaciones_ciudadanas/publicaciones/bilbao_en_cifras/2007/territorio_climatologia.pdf | title = Superficie, población y densidad por distritos. 2007 | publisher = Bilbao City Council | year = 2007 | access-date = 19 July 2008 | archive-date = 24 January 2009 | archive-url = https://web.archive.org/web/20090124082029/http://www.bilbao.net/castella/relaciones_ciudadanas/publicaciones/bilbao_en_cifras/2007/territorio_climatologia.pdf | url-status = live }}</ref> The official average altitude is {{convert|19|m|ft}}, although there are measurements between {{convert|6|m}} and {{convert|32|m}}.<ref>[[#gom79|Gómez Piñeiro 1979]]: 35</ref> It is also the core of the ''[[Comarcas of the Basque Country|comarca]]'' of [[Greater Bilbao]]. It is surrounded by the municipalities of [[Derio]], [[Etxebarri]], [[Galdakao]], [[Loiu]], [[Sondika]], and [[Zamudio]] to the north; [[Arrigorriaga]] and [[Basauri]] to the west; [[Alonsotegi]] to the south; and [[Barakaldo]] and [[Erandio]] to the east.

Bilbao is located on the [[Basque mountains|Basque threshold]], the range between the larger [[Cantabrian Mountains]] and the [[Pyrenees]].<ref name="orography">[[#gom79|Gómez Piñeiro 1979]]: 38</ref> The soil is predominantly composed of [[mesozoic]] materials ([[limestone]], [[sandstone]], and [[marl]]) sedimented over a primitive [[paleozoic]] base.<ref name="orography"/> The relief of the province is dominated by NW-SE and WNW-ESE oriented folds. The main fold is the [[anticline]] of Bilbao which runs from the municipality of [[Elorrio]] to [[Galdames]].<ref name="orography"/> Inside Bilbao there are two secondary folds, one in the northeast, composed of Mounts [[Artxanda]], Avril, Banderas, Pikota, San Bernabé, and Cabras; and other in the south, composed of Mounts Kobetas, Restaleku, [[Pagasarri]] and Arraiz. The highest point in the municipality is Mount Ganeta, of {{convert|689|m}}, followed by Mount Pagasarri, of {{convert|673|m}}, both on the border with Alonsotegi.<ref>{{cite web | url = http://www.bilbao.net/castella/ciudad/plano_callejero.pdf | title = Plano callejero de Bilbao | publisher = Bilbao City Council | access-date = 7 October 2010 | archive-date = 1 June 2010 | archive-url = https://web.archive.org/web/20100601082957/http://www.bilbao.net/castella/ciudad/plano_callejero.pdf | url-status = live }}</ref>