A spike in seismic activity on Santorini has spooked many on the island with concerns about a potentially powerful earthquake. Residents and visitors were advised to avoid large indoor gatherings and areas where rock slides could occur,

Santorini, the popular Greek holiday island, is taking emergency measures in response to intense seismic activity.

Schools have been shut and public gatherings are being discouraged on the Greek island of Santorini as local authorities put the popular tourist spot on high alert for a big earthquake, following scores of small temblors over the last two days.