Pumpkin Spring
Pumpkin Spring emerges as a mineralized thermal feature in the Grand Canyon's depths, located on the Hualapai Indian Reservation within the Colorado River corridor. The distinctive bright orange mineral deposits accumulating on flowstone give the spring its striking appearance, visible from river vantage points.
The spring sits at 1,640 feet elevation deep within the Grand Canyon's inner gorge, accessed only by multi-day river expeditions through some of Earth's most dramatic scenery. Mineralized carbonate deposits form a mound-like spring structure, with thick mineral encrustations creating the distinctive orange-colored formations visible from the river. The remote location keeps the spring largely pristine.
Pumpkin Spring's name derives from its visual appearance created by bright orange mineral and organic deposits—a direct reflection of its geochemistry and the distinctive aesthetic it creates within the canyon. The spring represents one of the Grand Canyon's most geologically fascinating thermal features, shaped by millions of years of geothermal activity and erosion.
Reaching Pumpkin Spring requires booking a commercial river trip or private expedition; independent river travel is heavily regulated. Multi-day expeditions depart from Lees Ferry, Arizona. Tribal permission from the Hualapai Nation is required. This is a backcountry experience for experienced river travelers only.
Is Pumpkin Spring worth visiting?
Best for
- Backpacking adventures
Not ideal for
- Day trips with young children
The water at Pumpkin Spring is neutral (pH 6.9). It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and sulfate (traditionally used for skin conditions and inflammation).