Between 56,000 and 32,000 years ago , explosive activity occurred at Ciomadul . That timespan coincides with the deposition of tephra from volcanoes in Italy in Europe ; it is possible that tephra also came from Ciomadul . Indeed , the age of Ciomadul 's last eruption overlaps with the age of the Campanian Ignimbrite . Tephra from eruptions of Ciomadul has also bee found in the Ursului Cave of the Perșani Mountains . Some tephra layers found in two drilling cores of the Black Sea may have originated at Ciomadul
Campanian Ignimbrite
Campanian Ignimbrite eruption
Ciomadul