The geothermal valley that gave the world the word 'geyser' — where the reliable Strokkur spout blasts boiling water 15–20 metres skyward every few minutes amid steaming vents and mineral pools.
The world's first national park, sitting atop a giant volcanic hotspot — home to half the planet's geysers, rainbow-rimmed hot springs like Grand Prismatic, and vast wildlife-rich valleys of bison, wolves, and bears.
