Clach an Trushal is the tallest standing stone (Menhir) in Scotland at 5,8 metres tall. Like many standing stones, it has been said that it marks the site of a great battle, the last one fought between the feuding clans of the Macaulays and Morrisons - however it is actually the solitary upright stone remaining from a stone circle built about 5,000 years ago. It occupied a place within the circle, although its placement was not central. The second last standing stone was removed in 1914, and used as a lintel.
From the base the stone circle at Steinacleit is clearly visible to the north east. The Callanish standing stones are 20 miles to the south west.
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.