Complex sentence: Korzok is hemmed between Ladakh in the north and Tibet in the east and Zanskar in the west; the Changthang plateau is the geographical setting with snow peaks that is the source of water to the Lake.
Split into simpler sentences: Korzok is hemmed between Ladakh in the north and Tibet in the east and Zanskar in the west. The Changthang plateau is the geographical setting with snow peaks that is the source of water to the Lake.