Retrieved 9 September 2016. ↑ Picture of Qala-e-Bost Castle http://maiaibing.smugmug.com/Afghanistan/Helmand-Landscape-Pictures/i-vP7ch3k ↑ National Geographic – Qala-E-Bost Arch, Afghanistan, 1968 Archived 22 August 2009 at the Wayback Machine. ↑ "The State of Afghan Cities report 2015". Archived from the original on 31 October 2015. ↑ "The State of Afghan Cities report 2015". ↑ USAID Field Report Afghanistan Feb 2005 ReliefWeb ↑ BBC News (28 January 2010).