A man fell from a cliff in the Tsarevets fortress this morning, Marina Petrova told BTA from Veliko Tarnovo.
The alarm was raised at around 11:00 by eyewitnesses.
Police and fire brigade teams arrived at the scene. The man, who appeared to be around 45 years old, was taken to the Veliko Tarnovo hospital.
His condition is serious, he has a fractured lower leg, surgery is imminent, the hospital said.