At least one tourist was injured on Thursday following a rockfall at the Navagio beach in the island of Zakynthos, Greek coast guard and police officials said.
Tons of rock broke away from the cliff face, falling down onto the popular "Shipwreck Beach" in Zante.
At least seven people were injured after part of a cliff overlooking Navagio Beach on the isle of Zakynthos came crashing to the sand.
A government statement said a 34-year-old Czech woman had been hospitalised with a fractured vertebra, while her husband and two children sustained light injuries.
"There was a rumble and a rock fell, followed by a larger rock and then another".
He continued: "I thought more was coming and with the size of the waves coming towards me I just started running".
The water hit his feet with such a strong force, it knocked him onto his back and went on to cover more than half the beach. However, authorities conducted searches out of an abundance of caution. (Supplied) Small boats at the beach were capsized as a result of the fall sparking big waves.
Rescue teams were searching for anyone who could be trapped. She said they heard an "almighty cracking sound" as the sheet of rock crashed down onto the beach, flooding the busy beach and capsizing boats.
The whole beach is surrounded by steep cliffs and can only be reached by boat.