Simplify the following text for a Grade 5 native English-speaking person.
Original: The western side of the county consists of mountains from the Eastern Carpathians group : the Rodna Mountains , the RarÄ u Mountains , the GiumalÄ u Mountains and the three `` Obcine '' with lower heights .
Simplified: The west side of the county has many mountains from the Eastern Carpathians group . These are the Rodna Mountains , the RarÄ u Mountains , the GiumalÄ u Mountains and the three `` Obcine '' .