Complex sentence: The Sandia Mountains run along the eastern side of Albuquerque, and the Rio Grande flows through the city, north to south, also the home of the International Balloon Fiesta, a large gathering of balloons from around the world.
Split into simpler sentences: The Sandia Mountains run along the eastern side of Albuquerque, and the Rio Grande flows through the city, north to south. Albuquerque is also the home of the International Balloon Fiesta, a large gathering of balloons from around the world.