The tour included a scenic cruise across Lake Te Anau to the western shores of the lake, where we were dropped off at the dock where the Te Anau Glowworm Caves are located. Upon disembarking, we line up in groups of 8 and entered the caves which were beautiful, with underground rock formations and even small waterfalls. After walking for a short distance, we climbed into a small boat which brought us into a dark grotto, where we were treated to a mesmerizing display of hundreds of glowworms hanging from the cave walls and ceiling, emitting their blue-green light, which they emit through a process called bioluminescence.