The Longstone is a megalithic monument near the village of Mottistone, close to the south west coast of the Isle of Wight. It is the only megalithic monument on the Island.
The Longstone consists of two pieces of local greensand sandstone probably from a vein 100 metres away. The larger stands at 3.9 metres and the smaller lies at its foot. They are on the edge of a wood in small fenced enclosure just off Strawberry Lane, near Mottistone. The name Mottistone (the Speaker's or pleader's stone) almost certainly derives from the Longstone. The stones and the surrounding land are in the care of the National Trust and are open to the public.
Until the mid nineteenth century the smaller stone was further south but in 1856 a local landowner, Lord Dillon, had it turned over to discover if it had a mortise hole (it did not). Its present position has led to fanciful tales of its being a sacrificial altar stone and so, in common with many other megalithic monuments, modern pagan meetings and rituals are associated with it.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.