Simplify the following text for a Grade 7 native English-speaking person.
Original: The tract , called Shaksgam , is technically part of Shigar , a valley of Baltistan region of Ladakh Province .
Simplified: Most of the tract , also called Shaksgam , is composed of the Shaksgam Valley . Most of the tract was administered as a part of Shigar , a valley in the Baltistan region .