Enduring turbulent skies and sea currents, New Zealand’s “Boulders on the Beach” are stepping stones from primitive eras into this one. Weighing several tons and measuring 9 feet in diameter, the boulders formed on the ocean floor 65 million years ago, and gradually emerged through erosion. One of New Zealand’s prime tourist sights, the boulders are steeped in folklore that they transformed from gourds and calabashes washed ashore 1,000 years ago during a legendary canoe wreck.