Global Volcanism Program | Image GVP-00379
Steaming Champagne Pool is one of many thermal features of the 10-km-wide Reporoa caldera. The caldera was formed about 230,000 years ago during the eruption of the Kaingaroa ignimbrite. No eruptions have occurred since the Pleistocene in the caldera, but hydrothermal explosions took place in the Waiotapu thermal field north of the caldera at the time of the Kaharoa eruption of the Okataina volcanic centre about 800 years ago. The Broadlands (Ohaki) hydrothermal field is located south of the poorly defined caldera margin.
Copyrighted photo by Katia and Maurice Krafft, 1986.
Copyrighted image used with permission. All Rights Reserved. Contact photographer for any usage requests.