Splendid Geyser, Fountain geyser in Upper Geyser Basin, Yellowstone National Park, United States.

Splendid Geyser is a fountain geyser in Upper Geyser Basin with two connected main pools and numerous smaller vents scattered around. The formation displays distinctive sawtooth-shaped rims made of mineral deposits with orange-tinted heat-loving microbes coloring the edges.

Splendid Geyser was very active in the early to mid-1970s, then fell quiet for years. It came alive again in 1992 and stayed active until its last eruption on May 13, 1998. It has not erupted since.

Splendid belongs to the Daisy Group with Daisy Geyser, Comet Geyser and Brilliant Pool. When Daisy goes dormant, Splendid becomes very active; in rare cases both erupt at once in a "dual eruption", when Daisy and Splendid are both much stronger than usual and Splendid reaches about 250 feet. Such dual eruptions last 30 to 120 minutes.

The water is extremely hot and the ground around the pools can be slippery, so stay on marked paths and keep distance from the edges. Wear sturdy shoes and watch your footing, especially when conditions are wet or icy.

The intervals between eruptions range from just a few minutes to more than two decades, making it nearly impossible to predict. This extreme unpredictability means that watching for an eruption becomes a matter of luck rather than timing.