Stone rings are circular formations made from large stones, often found in various cultures around the world. They can serve different purposes, including ceremonial, astronomical, or as burial sites. Some famous examples include the Stonehenge in England and the Ring of Brodgar in Scotland, which are believed to have been used for rituals or astronomical observations. These structures vary in size and construction, with some consisting of upright stones arranged in a circle, while others may be more elaborate with additional features. Archaeologists study stone rings to understand the cultures that built them and their significance in ancient societies.