The Long Valley Caldera, a massive supervolcano in California, has been causing unease among researchers due to its potential ...

The city of Mammoth Lakes sits on the edge of the Long Valley Caldera formed around 700,000 years ago. This caldera is 15 miles in diameter and is North America's second largest. 1. The Long ...

Long Valley speckled dace are endemic to the Long Valley volcanic caldera and the upper Owens River watershed in eastern California and are not found anywhere else in the world. These tiny fish once ...

At a sprawling 20 miles long, 11 miles wide and 3,000 feet deep the Long Valley Caldera, California, has struck fear into researchers for years. Due to its enormity, it is classed as one of the ...