Vancouver Island has the highest density of caves in Canada and some of the longest and deepest caves in the country. All of the caves occur in limestone or marble. The caves are decorated with delicate stalactites and stalagmites formed over countless centuries by dripping water.

Cave and underground stream within tilted layers of limestone larger image [JPEG, 58.1 kb, 463 X 501, notice]

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Underground stream in a cave appears on the surface as a spring larger image [JPEG, 45.7 kb, 440 X 305, notice]