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Frying Pan Lake
Frying Pan Lake Waimangu Cauldron is recognized as the world’s largest hot spring. Located within Echo Crater in the Waimangu Volcanic Rift Valley, New Zealand, the lake’s acidic waters maintain a steady temperature of 50–60 °C. Covering an area of 38,000 m², the lake is relatively shallow, averaging 5.5 m in depth, though some geothermal vents reach down to 18.3 m.
Echo Crater itself was created during the 1886 Mount Tarawera eruption, which opened a 17-kilometre rift extending southwest from the volcano to the nearby Southern Crater. Following the eruption, the crater gradually filled with rainwater and heated groundwater. However, it was not until a major eruption in Echo Crater on 1 April 1917 that the enlarged crater filled with hot spring water to form Frying Pan Lake in its current size by mid-1918.
The most recent activity in Echo Crater took place on 22 February 1973, when an eruption destroyed the Trinity Terrace area on the southeastern shore of the lake. Today, visitors can still see a series of colorful sinter terraces on the western shore. To the north, the lake is framed by Cathedral Rocks, a striking rhyolitic lava formation at least 60,000 years old. Originally known as Gibraltar Rock, its shape was dramatically altered during the 1917 eruption. A fumarole called the Devil’s Blowhole, once located in the crater’s northern wall, also vanished in that same event.
Frying Pan Lake Temperature
Frying Pan Lake or Waimangu Cauldron is recognized as the world’s largest hot spring. The lake’s acidic waters maintain a temperature of around 50–60 °C. A 1980 bathymetry survey revealed that the Lake spans approximately 200 meters, confirming its status as the world’s largest hot spring. The study also examined other lakes in the Waimangu Volcanic Rift Valley, noting that Inferno Crater Lake can reach even higher temperatures—up to 74 °C, though only for brief periods.
Frying Pan Lake Swimming
Swimming is not allowed in Frying Pan Lake because its waters are scalding hot—around 50–60 °C and highly acidic (pH ~3.5), which can cause severe burns and is extremely dangerous for human skin. Located in New Zealand’s Waimangu Volcanic Valley, Frying Pan Lake is the world’s largest hot spring. Visitors can experience the lake safely via walking trails around the area or a boat cruise on the nearby Lake Rotomahana.
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How to Reach Frying Pan Lake
To visit Frying Pan Lake, head to the Waimangu Volcanic Valley in New Zealand, a private eco-tourism site near Rotorua. The most common way to access the lake is by walking the scenic trails within the valley, though boat cruises on the nearby Lake Rotomahana are also an option. If you’re coming from Rotorua, you can take a bus to Waiotapu and then a taxi to reach Frying Pan.
