Innisidgen is the site of two Bronze Age entrance graves on the island of St Mary's in the Isles of Scilly. The two burial monuments, (Upper and Lower Innisidgen) lie on a steep slope of Innisidgen Hill overlooking Crow Sound with a view towards the Eastern Isles.
The Isles of Scilly were originally settled during the Neolithic era, circa 2500 BC. Burial monuments on the islands range in date from the later Neolithic period to the Middle Bronze Age (c.2500-1000 BC). Entrance graves are distinguished by their burial chamber, typically constructed with edge-set slabs, coursed rubble walling or both, and roofed by large covering slabs. The chamber is usually accessible through an opening in the mound's stone outer edge. Excavations of entrance graves have generally uncovered cremation urns, pottery fragments and cremated and unburnt human bones.
The two entrance graves at Innisidgen Hill were built during the Bronze Age. At the time of construction, the burial chambers overlooked a coastal inlet, later known as Crow Sound. During the prehistoric era, this site would have encompassed a wide valley of fields enclosed by stone walls. The remains of a prehistoric field system are located on the northern slope of Innisidgen hill next to the entrance graves, discernible as earth and piles of rubble. No artefacts or human remains were found when both graves were first excavated in 1854.
References:The Broch of Clickimin is a large and well preserved, though somewhat restored broch near Lerwick. Originally built on an island in Clickimin Loch (now increased in size by silting and drainage), it was approached by a stone causeway. The water-level in the loch was reduced in 1874, leaving the broch high and dry. The broch is situated within a walled enclosure and, unusually for brochs, features a large 'blockhouse' between the opening in the enclosure and the broch itself. Another unusual feature is a stone slab featuring sculptured footprints, located in the causeway which approached the site. Situated across the loch is the Clickimin Leisure Centre.