About Sulphur Caldron
Sulphur Caldron is a striking hot spring nestled within Yellowstone National Park, renowned for its vivid colors and intensely acidic waters. The spring’s bubbling acid pool releases a distinctive sulfur scent that fills the air, creating an otherworldly atmosphere unlike other hot springs in Wyoming.
Getting There
Reach Sulphur Caldron via a short, paved trail that departs from a nearby parking area offering limited spaces. The walk is easy, usually taking between 2 to 15 minutes, depending on your pace, making it an accessible stop among Wyoming swimming holes for most visitors.
What to Expect
You encounter a steaming pool of intensely acidic water with a pH of 1 to 2, so swimming is not advised. The area buzzes with geothermal activity and boasts colorful mineral deposits that catch the eye. Expect a sensory experience dominated by the sulfur smell and hissing steam, with no developed facilities nearby.
Tips for Visitors
Visit year-round to witness shifting colors and atmospheric steam clouds. Dress warmly in cooler months and prepare for limited parking by arriving early. Stay on designated trails, as the acidic water and fragile ground demand respect and caution throughout your visit.
