The Long Valley Caldera may no longer be erupting but it is by no means dormant. Just check out this landscape of vividly blue boiling water, geysers, fumaroles and craters; listen to all the hissing, whistling and popping. The heated water here is rising from almost three miles underground, kept from boiling by high pressure even though it is 200 degrees Celsius, coming to the surface after a thousand years underground. Be aware that you’re not allowed to dip into the water as the temperatures fluctuate wildly. The stream itself starts out cold, at around 10 degrees Celsius, and then progressively becomes scalding hot. Walk the short interpretive trails that explains the geothermal activities here.

• Camping at this site is not allowed.
• Parking is available.

• Actual timings for this viewpoint are from sunrise to sunset.

• By Car

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