A 23-year-old man from Baltimore was walking along an unauthorized trail accompanied by three relatives on Saturday morning, the Naples Provincial Command Carabinieri said. Two British tourists were also seen walking the forbidden path.
After the fall, the man reported only a few bruises on his arms, arms and back.
He was assisted by an ambulance that arrived at the scene, but he did not want to go to the hospital, police said.
There were clear signs along the trail warning of danger and prohibited access, the security forces said, adding that the prosecutor would decide whether to formally charge them with trespassing on public property.
The last eruption of Mount Vesuvius occurred in 1944. It is still active but is at rest, according to the Vesuvius National Park website.
The mountain’s highest peak reaches 1,277 meters (4,190 feet) and the crater is 450 meters (1,476 feet) in diameter and 300 meters (984 feet) deep, according to the national park’s website.
Vesuvius was a dormant volcano for centuries before it erupted in AD 79, burying cities such as Pompeii, Oplontis and Stabiae under ash.
Pompeii was flooded with a 23-foot-deep layer of volcanic debris that protected the ruins from the damaging effects of weather and climate. Since then, it has become a popular tourist destination as well as a rich training center for archaeologists.