Vancouver Island is renowned for its extensive cave systems, with over 1,000 known caves, many concentrated in its northern regions. These caves are predominantly found in karst landscapes, formed by the dissolution of soluble rocks such as limestone. The Quatsino Limestone Formation, a Triassic-aged geological feature, underlies parts of the island and is particularly notable for its karstified terrain, which includes sinkholes, caves, and disappearing streams. The Disappearing River Cave, situated within this formation, exemplifies the dynamic interplay between water and rock that shapes these extraordinary environments.
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