Complex sentence: Kisdon Force is one of several waterfalls on the Swale in the Keld area, the others being East Gill Force, Catrake Force and Wain Wath Force and occur where the river cuts a gorge through the Carboniferous Limestone between the hills of Kisdon and Rogan's Seat.
Split into simpler sentences: Kisdon Force is one of several waterfalls on the Swale in the Keld area, the others being East Gill Force, Catrake Force and Wain Wath Force. All occur where the river cuts a gorge through the carboniferous limestone between the hills of Kisdon and Rogan's Seat.