Simplify the following text for a Grade 7 native English-speaking person.
Original: The Balochistan Plateau lies to the west , and the Thar Desert and an expanse of alluvial plains , the Punjab and Sindh , lie to the east .
Simplified: The Balochistan Plateau lies to the West , and the Thar Desert in the East . An expanse of alluvial plains lies in Punjab and Sindh along the Indus river .