While studying the African tribe with Professor Robin Doyle, the natives tell them that they are 700 years old. The Professor and Robin are baffled. Meanwhile, the Professor wants to ask Robin out on a date, but feels that he's 'an old coot'. So when he hears of a 'fountain of youth', which is how the elders of the tribe live so long, he is determined to go there. But the location is up in the mountains, of which it is below zero degrees, and a blizzard is occuring. But with Robin leaving soon, and not able to return for a long period of time, he decides to brave the cold...Although Tarzan has only a supporting role, this is a classic episode. Professor Robin Doyle is voiced by Sheena Easton to great effect. We spend some great time with the Waziri tribe, and Basuli and Usula (recurring characters) add depth to the story. This episode includes everything, from a tribal dance to an avalanche. Don't miss Tarzan's first encounter with snow!