Experience a mysterious underground world of rushing water before drifting in darkness beneath the luminous shimmer of hundreds of glowworms.  Your trip to the Te Anau Glowworm Caves begins with a cruise to the western shores of Lake Te Anau. At the entry to the caves, view the informative displays and learn about this geological wonder before you head underground. On the tour of the caves, your friendly guide will point out the highlights and share their knowledge of the caves and its history. This underground world is astonishingly beautiful. The cave are 12,000 years old which by geological standards is still very young and they are still being carved out by the force of the river that flows through them. The result is a twisting network of limestone passages filled with sculpted rock, whirlpools and a roaring underground waterfall. Deep inside the caves, beyond the roar of the water, you will be taken by small boat into a silent hidden grotto inhabited by thousands of glowworms, unique to New Zealand. In the subterranean darkness, they produce a glittering display that is nothing short of extraordinary.