questionedithistorytranslationsCurrent version This is the accepted version. added by globalquiz.org July 20, 2012, 1:16 p.m. Which lake is the oldest in the world? Caspian SeaLake SuperiorLake VictoriaLake BaikalLake Baikal is the deepest and the oldest lake, at least 25 million years old. It was formed as an ancient rift valley. Due its age, size and isolation, it hosts about 1000 endemic species of plants and animals (which can be found nowhere else in the world).globalquiz.orgShare and bring new players to the game!0Very uninterestingToo difficultPoorly writtenIncorrect or questionableCorrect this question0Very interesting!reach: rather globalgeographygeography of RussiageologylakesnatureRussiatechnologyVotes Acceptable globalquiz.org