Complex sentence: Utvika Camping is a camping spot close to the Tyrifjorden perhaps mostly known as the place were most of the survivors of the 2011 Norway attacks at Utøya was taken when rescued by boat owners in the area.
Split into simpler sentences: Utvika Camping is a camping spot close to the Tyrifjorden. Perhaps mostly known as the place were most of the survivors of the 2011 Norway attacks at Utøya was taken when rescued by boat owners in the area.