Indian road construction workers walk with their luggages along the Indo China border in Bumla at an altitude of 15,700 feet (4,700 meters) above sea level in Arunachal Pradesh.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/drill-minerals-china-border-arunachal-pradesh-gsi
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/arunachal
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/geological-survey-india-gsi
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china