| Type | Megalithic site |
| Location | Old Britannia, planet Yahrell |
| Civilization | |
| Construction | Approximately 10,000 Earth years ago |
| Materials used | Sarsen stones • Unidentified alien artifact |
| Scientific debate | Origin of the central artifact • Methods of construction and transportation |
| Cultural significance | Spiritual center • Symbol of mastery over engineering and astronomy |
| Architectural features | Circular arrangement • Precise stacking • Star alignment |
