where many Indian artifacts have been found.Some of the items discovered include pottery, arrowheads,weapons,and jewelry. For many years there were persistent rumors of a large underground lake somewhere in a cave,but it was not discovered until 1905.In that year,a thirteen-year-old boy named Ben Sands crawled through a small opening three hundred feet underground.He found himself in a large cave half filled with water. Today tourists visit the Lost Sea and ride far out onto it in glass-bottomed boats powered by electric motors.More than thirteen acres of water have been mapped out so far and still no end of the lake has been found.Even though teams of divers have tried to explore the Lost Sea,the full extent of it is still unknown. 21.The Lost Sea is unique because it is A.part of a historic cave system B.the biggest underground lake in the USA C.listed in the Guinness Book of World Records D.the largest body of water in Tennessee 22.The Craighead Caverns have been known A.throughout history B.since the time of the Indian nations C.since 1905 D.divers explored them 23.Who located the Lost Sea in recent times? A.The Cherokee Indians B.Tourist C.Ben Sands D.Scientists 24.What was found in“The Council Room”？ A.A small natural opening B.A large cave C.Another series of rooms D.Many old Indian Objects 672where many Indian artifacts have been found. Some of the items discovered include pottery , arrowheads, weapons, and jewelry. For many years there were persistent rumors of a large underground lake somewhere in a cave , but it was not discovered until1905. ln that year, a thirteen-year-old boy named Ben Sands crawled through a small opening three hundred feet underground. He found himself in a large cave half filled with water. Today tourists visit the Lost Sea and ride far out onto it in glass-bottomed boats powered by electric motors. More than thirteen acres of water have been mapped out so far and still no end of the lake has been found. Even though teams of divers have tried to explore the Lost Sea , the full extent of it is still unknown. 21. The Lost Sea is unique because it is 一一一一一一. A. part of a historic cave system B. the biggest underground lake in the USA C. listed in the Guinness Book of W orld Records D. the largest body of water in Tennessee 22. The Craighead Caverns have been known 一一一一一一. A. throughout history B. since the time of the Indian nations C. since 1905 D. divers explored them 23. Who located the Lost Sea in recent times? A. The Cherokee lndians C. Ben Sands B. Tourist D. Scientists 24. What was found in "The Council Room"? 一一一一一· 672 A. A small natural opening C. Another series of rooms B. A large cave D. Many old lndian Objects