Since lava tube caves began to be mapped in large numbers, numerous claims to possession of the world's longest have been advanced by caverns from various countries. Among the caves for which this distinction has been claimed are Ape Cave, washington (halliday, 1962); the Cueva de los Verdes, Canary Islands (Montoriol and de Mier, 1969); the Cueva del Viento, Canary Islands (Montoriol and de Mier, 1974); Kazumura Cave, Hawaii (Gagne and Howarth, 1975); Leviathan Cave, Kenya (Simon, 1976); Man Jang Gul, South Korea (Anon., 1981); and Bilemot Gul, South Korea (Ogawa, 1982).(omitted)