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In page History of the Isle of Man:

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The Neolithic Period marked the coming of farming, improved stone tools and pottery.[citation needed] During this period megalithic monuments began to appear around the island. Examples are found at Cashtal yn Ard near Maughold, King Orry's Grave in Laxey, Meayll Circle near Cregneash, and Ballaharra Stones in St John's.[citation needed] The builders of the megaliths were not the only culture during this time; there are also remains of the local Ronaldsway culture (lasting from the late Neolithic into the Bronze Age).[4]