AT A GLANCE
Why go?
Just east of Poznań, in a quiet pocket of Greater Poland near the villages of Biskupice and Janków, a small lake known affectionately as "Alaska" draws an unlikely crowd most weekends: the Wielkopolskie Morsy, a local club of winter swimmers ("morsy" — walruses — being the Polish word for cold-water enthusiasts). Listed on the map as a swimming lake and open around the clock on Saturdays and Sundays, this is less a formal resort than a living ritual — a place where a tight-knit community gathers to break the ice, warm up in the trees, and plunge together into near-freezing water.↗↗
What makes the spot special isn't scenery or facilities but atmosphere. On a frosty Sunday you'll find an ice hole sawn out of a frozen surface, a crackling bonfire, and groups of all ages — some in their seventies — cheering on first-timers who emerge red-cheeked, wide-eyed and grinning. It's one of the most authentic ways to experience the Polish tradition of morsowanie, and a genuine invitation to watch, or to take the plunge yourself.↗↗
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A Walrus Club's Weekend Lake
"Morsowanie" — winter or cold-water swimming — is a long-running pastime across Poland's lakes, rivers and coast, and Greater Poland has a lively scene, with several groups of enthusiasts active in and around the Poznań district. The Wielkopolskie Morsy are one of them, taking their name from the broader community of "walruses" who keep the season alive from autumn through to spring. Their home water is the small lake their members call "Alaska," sitting by Janków near Biskupice, a short drive east of Poznań.↗↗
The gatherings have the feel of a weekly ritual rather than a scheduled attraction. Members come to the water's edge, socialise, and the season's tone is set by the weather: a clear, crisp day is treated as a small celebration, a hope of snow on the ice as the best backdrop of all. It is exactly this clubby, informal character that gives the place its charm for visitors.↗
What to Expect by the Ice Hole
A typical session follows a warm rhythm before the cold shock. There's a bonfire to gather round — the kind tended by a devoted club member with a ready story and a flask to share — and a proper warm-up that can mean jumping jacks, bending drills and jogging laps along the lakeside paths. Only when muscles are awake and the fire is going do the hardier swimmers make for the water.↗↗
Deep in winter, the lake surface can freeze over, and the club's answer is characteristically hands-on: an ice hole — a "przerębel" — is sawn open with a chainsaw so swimmers can get in and out on a schedule. Water temperatures of just a couple of degrees above freezing are normal, which, paradoxically, can feel warmer than the biting air above.↗
First-timers describe the experience in vivid terms — the water surprisingly almost warm to start, then a sudden tightness as you sink to the neck, and a prickling, pins-and-needles tingle once you climb out. The crowd around the fire, complete with the odd curious onlooker and the local anglers sharing the bank, makes even the nerve-wracking moments fun. Afterwards, the ritual closes as it always does: grilled sausage and boiled potatoes, and the warmth of the community that keeps people coming back week after week.
Why People Do It
For practitioners, morsowanie is as much about how it makes you feel as about the stunt of it. The tradition is presented as a way to toughen the body and boost tolerance to cold, sharpen circulation, lift mood and improve sleep, and help you recover after exertion — benefits described by enthusiasts and echoed across the regional winter-swimming scene. It's also, on the evidence of these Sunday gatherings, an irresistible dose of endorphins, laughter and camaraderie.
The activity is, by definition, the short dipping of the body in very cold water — generally below about 5°C — in a lake, river or the sea, practised through the colder months. It is exhilarating but not for everyone, and even devoted morsy stress that respect for the water is the whole point.
Swimming Here Safely
The club itself sets sensible house rules, which are worth heeding if you plan to join in. Short is smart: two immersions of roughly five to ten minutes are considered the sweet spot, and trying to beat anyone's time record is strongly discouraged — everyone should learn how their own body reacts to the cold. Stay put rather than attempting to swim right around the lake, and don't trust a marker buoy as a promise of safety; in cold water, being level-headed and thinking ahead matters more than anything else.↗
Before your first proper plunge, the standard advice is to see your family doctor and get basic health checks so you know there are no contraindications, and ideally to make that first try under the watchful, experienced eyes of regulars rather than alone. Arriving is part of the preparation too: in deep winter the club's own members warn about driving conditions and recommend fitting proper winter tyres for the trip out to "Alaska."↗
Planning Your Visit
On the map the lake is open around the clock on Saturday and Sunday and closed to organised use on weekdays, so plan for a weekend — and the big club gatherings most often take place on Sundays, when the bonfire is lit and the water is being shared. A friendly, low-key way in is simply to arrive, keep warm by the fire, watch the swimmers, and ask before jumping in; the morsy are famously welcoming to curious onlookers and would-be beginners alike.↗
Bring for the cold regardless of the forecast: warm layers to peel off and put back on quickly, a hat and gloves for the banks, a towel and dry clothes, and sturdy footwear for the lakeside. Because this is a community club spot rather than a managed resort, check the Wielkopolskie Morsy club's own pages or social channels before you set out for exact meeting dates and any seasonal changes.↗
The setting is unassuming — a small, wooded lake on the quiet edge of the Poznań countryside — which is precisely why it works. It's not a place you come for grand views or amenities, but to feel the bracing thrill of the season and the warmth of a community that turns freezing water into a winter festival.
What makes it special
Watch the Wielkopolskie Morsy saw an ice hole (przerębel) into a frozen lake and plunge into water of just a couple of degrees above freezing.↗
Join a Sunday gathering by the bonfire, warm up with the club, and try a short, supervised dip into near-freezing water.↗
End the session the traditional way — grilled sausage and boiled potatoes around the fire with a friendly, hardy local crowd.↗
A little planning goes a long way
- Plan around weekends: the lake is listed as open 24 hours on Saturday and Sunday and closed on weekdays, and the club's gatherings typically fall on Sundays.
- Keep immersions short and unhurried — the club recommends about two dips of five to ten minutes, no time-trials, and no swimming around the lake.↗
- Check with a doctor and get basic health screening before your first cold-water plunge, and do your first swims alongside experienced morsy.
- Dress for the cold even on a clear day: easy layering, a hat and gloves, towel, dry clothes and sturdy lakeside footwear.
- If driving out in winter, follow the members' own advice and fit proper winter tyres for the road to "Alaska."↗
About this guide
Compiled with AI assistance from the sources below; this is not a first-hand visit. Place details collected October 5, 2026. Hours, access and ratings can change; confirm with the venue before visiting.