Bronze Age stone circle found for the first time in 100 years on Dartmoor - and it could be older than Stonehenge
- Stone circle Sittaford Tor is the highest circle in southern England
- Forms part of the 'sacred arc' of similar sites placed in a semi-circle
- It is the first such site discovered in a century by archaeologists
- Religious or spiritual ceremonies may have been held at the site
- Raises question of what was at the centre of the 'sacred arc' of stone circles