Complex sentence: Dunnottar is also a mentioned site for a battle between King Donald II and the Danish Vikings in 900 AD, and a raid into Scotland via land and sea by King Aethelstan of Wessex in 934 included an attack on Dunnottar.
Split into simpler sentences: Dunnottar is also mentioned as a site for a battle between King Donald II and the Danish Vikings in 900 AD. A raid into Scotland via land and sea by King Aethelstan of Wessex in 934 included an attack on Dunnottar.