WarmPrimitive

Great Sulphur Spring

MI

About Great Sulphur Spring

Great Sulphur Spring is a warm, primitive spring tucked away in Monroe County, Michigan. Its distinct, sulfur-rich waters carry a unique, earthy aroma that hints at the mineral-rich depths below. This spring offers a rare chance to connect with one of Michigan’s natural swimming holes that feel untouched and mysterious.

Getting There

Reaching Great Sulphur Spring requires some effort—expect a short hike through wooded trails that test your sense of direction. Parking is limited nearby, so prepare for a bit of a walk. The path can be uneven, so sturdy shoes are recommended.

What to Expect

The water here is pleasantly warm but carries a strong sulfur scent, which some find invigorating while others may find challenging. The setting is quiet and surrounded by nature, offering a serene but raw swimming experience without any developed facilities. You’re likely to encounter few visitors, preserving the spring’s untouched character.

Tips for Visitors

Visit during weekdays or early mornings to enjoy a quieter atmosphere. Bring water shoes for traction and protection from uneven surfaces. There is no entrance fee, but pack out everything you bring in to respect this natural area. Avoid swimming if sensitive to sulfur or if the smell seems overwhelming.

Last updated December 20, 2025

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Fee

Free

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