A large limestone cave that stretches for almost 2 whole kilometers, Gua Tempurung in Perak, Malaysia, is a beautiful place to visit. It's almost like visiting another world, hidden from the terrors of man. Its fresh mountain waters hold life, as small fishes dash about your legs. Large in-mountain ravines that go so far down, your helmet light never reaches the floor. It is definitely not for those who have a fear of heights.