Firehole Spring

Overview

Firehole Spring is a classic hot spring stop along the one-way Firehole Lake Drive in the Lower Geyser Basin. It’s an easy, quick pullout-and-stroll kind of stop, with a short boardwalk that gets you right up to a steaming, vividly colored pool.

What You’ll See

• A turquoise pool rimmed with striking oranges, yellows, and greens created by heat-loving microbes.
• Constant steaming that’s especially dramatic on cool mornings.
• Nearby thermal features along the same drive, making it a natural pair with other Lower Geyser Basin highlights.

Geology, Simplified

Firehole Spring is a hot spring: groundwater percolates down, heats up from Yellowstone’s powerful underground heat, and rises back to the surface. Unlike geysers, hot springs lack a tight “nozzle,” so they circulate steadily instead of erupting. The colors come from different microbes thriving in distinct temperature zones.

Logistics & Safety

• Parking is via small roadside pullouts on Firehole Lake Drive; it’s a narrow, one-way loop, so don’t block traffic and be patient in peak hours.
• There are no restrooms at Firehole Spring. Closest options include Midway Geyser Basin parking, Firehole Picnic Area, and the Firehole Swimming Area on Firehole Canyon Drive.
• Stay on boardwalks—ground can be thin and water near-boiling. Do not touch the water or toss anything in.

Wildlife

Thermal areas and the nearby Firehole River corridor can attract wildlife like bison, elk, and waterfowl. Enjoy the view from a distance and give animals plenty of space.

Pair It Up

Firehole Spring is part of a broader cluster of features. Combine it with other Lower Geyser Basin stops (like Fountain Paint Pots and Excelsior Geyser Crater) or make a broader hydrothermal loop day including Midway, Old Faithful, or Norris.

Best Time to Visit

Early morning or late afternoon brings better light for color and usually easier parking. Cooler mornings make the steam pop for photos. Midday can be busier and flatter for photography.