The group, who spent one day exploring the lava flows, which cascaded down from a 200ft cliff, braved red-hot water temperature tipping 50 degrees Celsius. Ben said: "One of the biggest dangers was the toxic steam produced when the lava comes into contact with the water. "You could hear the sound of the lava hissing as it hit the ocean. It was out of this world."Picture: Alexandre Socci / Barcroft Media

Credit : Alexandre Socci / Barcroft Media