Te Waikoropupu (Pupu) Springs

On Thursday we visited a fairly unique spring system just outside of Takaka called "Pupu Springs." Ancient tectonic activity raised two mountainous regions, while lowering the valley in between at the same time. This created an elaborate design in the marble rock of caves, underground rivers, and sinkholes. Chambers deep beneath the ground are flooded but blocked by sandstone above, acting as a ‘cap rock.’ Since erosion has destroyed the top layers of the cap rock, there are points in the Waikoropupu Valley where because of intense pressure a spring system has developed where the water erupts from these areas.

There is not a clear source of water for the springs but is believed to come from the Takaka River. It is thought to be the clearest freshwater spring system in the world and affords 90 meters (300 feet) visibility. This is demonstrated in an elaborate mirror system, which is set up so visitors can view the springs from within, looking down the above ground river channel. This was really difficult to photograph though, so sorry no pictures!