Parfrey's Glen State Natural Area photo
ParkWisconsin, US

Parfrey's Glen State Natural Area

Parfrey's Glen is a spectacular gorge, deeply cut into the ancient sandstone conglomerate of the Baraboo Hills.

About

Parfrey's Glen is a spectacular gorge, deeply cut into the ancient sandstone conglomerate of the Baraboo Hills. As Wisconsin's very first State Natural Area, established in 1952, it offers a dramatic landscape of towering walls, unique geological formations, and a microclimate that nurtures flora more typical of northern Wisconsin, making it a unique ecological treasure in the southern part of the state.

The glen's towering walls, reaching depths of nearly 100 feet, are composed of sandstone embedded with rounded quartzite pebbles and boulders, often referred to as "plum pudding stone" due to its distinctive appearance. Parfrey's Glen Creek, a fast-flowing, cold hardwater stream, carves its way through the gorge, creating a serene and captivating environment. The moist, shaded conditions support a diverse array of plant life, including yellow birch, mountain maple, and red elder, as well as several rare and federally or state-threatened species like the northern monkshood, round-stemmed false foxglove, and cliff goldenrod. The creek also harbors a rich insect fauna, with rare diving beetles and caddisflies.

Visiting Parfrey's Glen offers a chance to step into a "primeval landscape" where geological history is dramatically on display. The hike culminates in a small, picturesque waterfall, inviting visitors to rock scramble and wade through the stream to reach its tranquil base. The combination of its striking geology, rare plant communities, and the adventurous nature of the trail makes it an unforgettable destination for nature enthusiasts and photographers alike. Don't forget to bring the Snappit nature identification app along to scan local species.

Parfrey's Glen holds a significant place in Wisconsin's conservation efforts, having been designated the state's first State Natural Area in 1952. The glen itself was named after Robert Parfrey, an Englishman who owned a mill in the area around 1865, with remnants of an old mill foundation still visible. Geologically, the glen is a testament to millions of years of natural processes. It is carved into the Baraboo Hills, which are described as exhumed monadnocks largely composed of massive Precambrian Baraboo quartzite. The exposed Cambrian layers within the gorge provide excellent opportunities for geological interpretation, representing depositions from an ancient Cambrian sea. While the area was not directly glaciated during the last Ice Age, meltwater from the retreating glaciers likely played a role in shaping the glen. Over time, the trail within the gorge has been significantly impacted by natural forces, particularly severe floods in 2008 and 2010, which destroyed previous boardwalks and bridges, leading to the current, more rugged stream-bed trail.

What to do here

Hike the designated trail, navigate the rocky creek bed and perform stream crossings to reach the waterfall, observe the unique northern plant species thriving in the glen's microclimate, and photograph the dramatic geological features.

Seasonal info

Spring/Summer: The glen is vibrant with lush foliage and wildflowers. Expect higher visitor numbers, especially on weekends. Water levels in the creek can vary.

Fall: Autumn brings beautiful fall colors to the surrounding woodlands.

Winter: The glen transforms into a serene, icy wonderland with frozen waterfalls and exposed rock formations. It's less crowded but requires appropriate gear for snow and ice.

Accessibility

An initial segment of the trail is wheelchair accessible. However, the main path into the gorge quickly becomes rocky and requires navigating the creek bed, including stream crossings and rock scrambling, especially to reach the waterfall.

Don't miss

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The "plum pudding stone" geological formations, the cool and shaded gorge itself, Parfrey's Glen Creek, the moss-covered walls, and the small waterfall at the end of the accessible trail are primary attractions.

Wildlife you might spot

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Good to know before you go

Wear appropriate footwear

** Sturdy, waterproof hiking boots are highly recommended, as you will need to walk through the stream and over slippery rocks to reach the waterfall.

Plan for parking

The small parking lot can fill quickly, especially on summer weekends. Arriving early (before 9 a.m.) or visiting on a weekday is advised.

Pack light

Food and beverages are not permitted within the natural area, so plan to eat before or after your visit.

Stay on the path

To protect the delicate environment and rare species, visitors must remain on the designated trail. Once the maintained trail ends, stay within 20 feet of the creek bed and do not venture past the base of the waterfall.

Consider trekking poles

These can provide extra stability when navigating the rocky and potentially slippery sections of the creek bed.

Check conditions

Especially in spring, heavy rains can increase water levels, making creek crossings more challenging. In winter, be prepared for ice and snow.

Frequently asked questions

Yes, a Wisconsin State Park vehicle admission sticker is required to park in the parking lot at Parfrey's Glen. A credit card kiosk is available on-site if you need to purchase one.
The initial part of the trail is relatively easy, but to reach the waterfall, visitors must navigate a rocky creek bed, including stream crossings and rock scrambling. While the round-trip distance is under two miles, the terrain is moderate to challenging in sections.

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