Loch Na Berie is the site of an Iron Age Broch and associated causeway. The site was excavated in the 1980s, which identified that the Broch had survived to first floor level. Loch na Berie is roughly 16.5 meters in diameter and the walls are roughly 3 meters thick. A modern causeway made of stones robbed from the broch was built to the west of the broch, though it is thought that an ancient causeway underlies the modern one.References:
La Hougue Bie is a Neolithic ritual site which was in use around 3500 BC. Hougue is a Jèrriais/Norman language word meaning a \'mound\' and comes from the Old Norse word haugr. The site consists of 18.6m long passage chamber covered by a 12.2m high mound. The site was first excavated in 1925 by the Société Jersiaise. Fragments of twenty vase supports were found along with the scattered remains of at least eight individuals. Gravegoods, mostly pottery, were also present. At some time in the past, the site had evidently been entered and ransacked.
In Western Europe, it is one of the largest and best preserved passage graves and the most impressive and best preserved monument of Armorican Passage Grave group. Although they are termed \'passage graves\', they were ceremonial sites, whose function was more similar to churches or cathedrals, where burials were incidental.