Simplify the following text for a Grade 9 native English-speaking person.
Original: Skara Brae is a large stone-built Neolithic settlement , located on the Bay of Skaill on the west coast of Mainland , Orkney , Scotland .
Simplified: Skara Brae is a large stone-built Neolithic settlement on the Bay of Skaill on the west coast of mainland Orkney , Scotland .