Anemone Geyser

Anemone Geyser is a closely linked pair of geysers in Yellowstone National Park’s Upper Geyser Basin, near Old Faithful, where active thermal features are densely concentrated. About ten feet apart, Big Anemone and Little Anemone are often treated as one attraction although they can behave independently. Named in 1904 for their pale yellow color and rounded sinter, which resemble anemone flowers or sea anemones, they are notable for both appearance and activity. Big Anemone erupts more regularly and forcefully, while Little Anemone is lower and far more variable. Their activity appears interconnected and also follows the basin’s weekly Geyser Hill wave, showing how Yellowstone’s thermal features can affect one another.

Mammoth, Wyoming · United States