An ambulance has attended the scene at Mount Leinster, just 3km from the nine stones.
It’s believed a cyclist came off their bike.
The full circumstances are not yet known, however, the road was blocked for a short time.
The ambulance is now en route to hospital and traffic can pass as normal. The incident happened around Huntingtown. The person’s injuries are unknown. Meanwhile, it’s a busy day at Mount Leinster with clear blue skies attracting many local visitors.