[00:01.040]--- Lesson 67 Volcanoes [00:06.720]--- First listen and then answer the question. [00:12.240]--- Why does Tazieff risk his life like this? [00:18.320]Haroun Tazieff, the Polish scientist, has spent his lifetime studying active volcanoes and deep caves in all parts of the world. [00:32.400]In 1948, he went to Lake Kivu in the Congo to observe a new volcano which he later named Kituro. [00:43.920]Tazieff was able to set up his camp very close to the volcano while it was erupting violently. [00:53.040]Though he managed to take a number of brilliant photographs, he could not stay near the volcano for very long. [01:01.600]He noticed that a river of liquid rock was coming towards him. [01:07.400]It threatened to surround him completely, but Tazieff managed to escape just in time. [01:15.720]He waited until the volcano became quiet and he was able to return two days later. [01:23.880]This time, he managed to climb into the mouth of Kituro so that he could take photographs and measure temperatures. [01:33.760]Tazieff has often risked his life in this way. He has been able to tell us more about active volcanoes than any man alive. [01:46.000]--- end