Complex sentence: Jotunheimen (English: The Realm of the Giants) is a mountain range in southern Norway covering an area of roughly 3,500 km² and is part of the long Scandinavian Mountains range.
Split into simpler sentences: Jotunheimen (English: The Realm of the Giants) is a mountainous area of roughly 3,500 km² in Southern Norway. Jotunheimen is a part of the long Scandinavian Mountains range.