Inferno Crater Lake – New Zealand
Located in the Waimangu Volcanic Rift Valley in New Zealand, Inferno Crater Lake is the world’s largest hot spring. Its temperatures range from 35 to 80 degrees Celsius and has a maximum depth of 29.8 metres. Since Inferno Crater is connected to Frying Pan Lake, their temperatures and water levels depend on where they are in their unique 38-day hydrothermal system cycle. When Inferno Crater’s water levels are low, the lake appears as dull grey colour. When its levels are high, the lake glistens with an intense sky blue colour.
Frying Pan Lake – New Zealand
Inferno Crater Lake’s counterpart, Frying Pan Lake, is also located in the Waimangu Volcanic Rift Valley in New Zealand. Much like Inferno Crater, it’s also one of the world’s largest hot springs (but not quite as large as Inferno Crater). The lake’s temperatures range from 50 to 60 degrees Celsius and has a maximum depth of 20 metres.
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Umi Jigoku (Sea Hell) – Japan
Out of the eight hot springs in the Hells of Beppu in Japan, Umi Jigoku (Sea Hell) is one of the most beautiful. Surrounded by spacious gardens, this hot spring comes with a history dating back to over 1300 years ago when Mt Tsurumi, a nearby volcano, erupted. Umi Jigoku is anything but human-friendly, though. Its maximum depth is an astonishing 200 metres, and its bright blue waters can reach temperatures up to 97.7 degrees Celsius.