The tract, called Shaksgam, is technically part of Shigar, a valley of Baltistan region of Ladakh Province. The Raja of Shigar controlled this land until 1971, when Pakistan abolished the Raja government system. A polo ground in Shaksgam was built by the Amacha Royal family of Shigar, and the Rajas of Shigar used to invite the Amirs of Yarkand to play polo there. All the names of the mountains, lakes, rivers and passes are in Balti/Ladakhi, suggesting that this land has been part of Baltistan/Ladakh province for a long time.