
Parfrey's Glen State Natural Area in Merrimac, WI

Parfrey's Glen State Natural Area stands out as southern Wisconsin’s most dramatic gorge hike, offering a rare glimpse into ancient geology and lush biodiversity. Our editors recommend it for its unique sandstone canyon, waterfall finale, and the immersive sense of wildness you rarely find so close to civilization. For hikers and nature enthusiasts seeking a genuine adventure—without venturing far from Devil’s Lake—this is an essential stop.
Expert recommendations based on quality, value, and visitor feedback
Item | Price |
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Parfrey's Glen Trail (1.6 miles round-trip)
Moderate hike through a scenic sandstone gorge, featuring stream crossings, rock-hopping, and a beautiful waterfall at the end.
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Free (with park admission) |
Wildlife & Nature Viewing
Spot rare ferns, spring wildflowers, and a variety of birds in this ecologically rich area. Great for amateur botanists and birders.
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Included |
Winter Activities (Snowshoeing)
The glen transforms into a quiet, icy wonderland—ideal for snowshoeing and winter hiking, though trail conditions may be challenging.
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Included |
Restrooms (Near Parking Lot)
Basic facilities available at the main parking lot. No restrooms beyond this point—plan accordingly.
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Included |
State Park Vehicle Admission Sticker
Required for parking. Daily and annual passes available; covers all Devil’s Lake State Park properties.
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$8–$13/day |
Trail Overview: The main attraction is the out-and-back Parfrey's Glen Trail, a 1.6-mile round trip that begins with a paved, accessible section before transitioning to a rugged, dirt path. The final stretch requires hikers to scramble over rocks and wade through shallow stream beds to reach a secluded waterfall—expect to get your boots wet. The gorge is narrow, shaded, and lined with rare ferns and mosses, creating a microclimate that feels almost primordial.
Facilities: Restrooms are located in the parking area, but there are no facilities once you enter the glen. There are no picnic tables or shelters within the glen itself; picnicking is not allowed in the natural area to protect sensitive habitats. All food, beverages, and pets are strictly prohibited beyond the parking lot boundary—this is rigorously enforced to preserve the unique ecosystem.
Accessibility: The initial paved segment is suitable for wheelchairs and strollers, but further access is limited due to steep, rocky, and uneven terrain. The glen is not recommended for those with mobility challenges beyond the first section. The stream crossings and slippery rocks require good balance and proper footwear—waterproof hiking boots are highly recommended.
Regulations & Safety: No pets, food, or beverages are allowed in the glen. Swimming and climbing on rocks are also prohibited. There are no trash receptacles—pack out everything you bring. The trail may be closed or partially inaccessible after heavy rains or flooding; always check the Wisconsin DNR website for updates before your visit.
Permits & Entry: Entry to Parfrey’s Glen is included with a valid Wisconsin State Park admission sticker (daily or annual). No reservations or individual permits are needed—access is first-come, first-served. The parking lot can fill quickly on weekends, especially midday in peak season.
Insider Recommendations: For the best experience, arrive early on weekdays to avoid crowds and enjoy the tranquility of the gorge. Spring brings an impressive wildflower display, while autumn offers dramatic leaf color. Winter visits are possible, but trail conditions can become icy or impassable—check weather and bring traction gear if attempting a winter hike. There are no equipment rentals on-site, so bring all necessary gear and supplies with you.
Parfrey’s Glen State Natural Area is Wisconsin’s first designated State Natural Area, established in 1952 to protect its rare geological formations and diverse ecology. Carved by glacial meltwaters, the gorge features 100-foot-high sandstone walls, tumbling streams, and a secluded waterfall. This unique landscape creates a cool, moist microclimate that supports rare ferns, wildflowers, and bird species typically found much farther north.
The glen is named after Robert Parfrey, a 19th-century settler and conservationist whose legacy is reflected in the site’s strict preservation ethos. Today, Parfrey’s Glen serves as a living classroom for geology, botany, and natural history—drawing hikers, naturalists, and photographers from across the Midwest. Its role within the larger Devil’s Lake State Park system makes it a vital refuge for wildlife and a beloved destination for those seeking an authentic, unspoiled outdoor experience.
Perfect for: Adventurous hikers, nature lovers, amateur botanists, geology/photography enthusiasts, and families with older kids ready for a real adventure.
Consider elsewhere if: You require fully accessible trails, need extensive facilities, or are visiting with pets or very young children. Best experienced by those prepared for rugged terrain and a true “leave no trace” ethos.
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