Xiangkhouang Province
Xaisomboun (/saɪʒəʊmbuːn/ Lao ໄຊສົມບູນ) is a mountainous province in central Laos, between Vientiane Province and Xiangkhouang Province. The province covers an area of and had a population of 85,168 in 2015. Xaisomboun town in Anouvong District is the economic centre. There are extensive copper and gold mining operations nearby at Sana Somboun.