If you want to stand at the edge of the most beautiful forest lakes in Turkey, set your course for Yedigoller National Park, a pocket of wilderness in the highlands of Bolu province that locals call Turkey’s Switzerland. Seven emerald lakes lie scattered through a bowl of beech and fir forest, linked by streams and small waterfalls, and the valley glows with color in autumn. It is a place of mirror-still water, quiet trails, and forest silence, and this article shows you what makes it one of the most loved natural wonders of the country.
A Land of Seven Lakes in the Bolu Highlands
Yedigoller means seven lakes in Turkish, and the name describes exactly what you will find: seven lakes tucked into a forested valley in the mountains of Bolu province, between the cities of Bolu and Duzce in the northwest of the country. The park sits at an elevation of around eight hundred metres, and the mountains wrap around the valley like walls.
The lakes are the soul of the park. They range from the great sheet of Buyuk Gol, the largest of the seven, down to small hidden pools that you can walk past without noticing until the trees part. Streams run between them, and in places the water spills over mossy rocks in little cascades.
Because the valley is so enclosed, it has its own quiet climate. The forest holds the moisture, the slopes shelter the water, and the result is a green, cool, and deeply peaceful landscape that feels far from the rest of Turkey. It is the kind of place where the loudest sound is usually the wind moving through the beeches.
How the Lakes Were Born: A Story of Landslides
The story of the seven lakes begins with a catastrophe. Geologists believe that thousands of years ago, a great landslide tumbled down from the slopes above the valley and dammed the streams that ran through it. The water backed up behind the wall of rock and earth, and the lakes were born.
Each lake was created by its own dam of debris, which is why they sit at slightly different levels and why the water falls from one to the next in small cascades. The biggest dam created Buyuk Gol, the great lake, and the smaller slides behind it formed the rest of the chain.
The landslide story also explains the great beauty of the park. The slopes that slid were quickly clothed in forest, and the water settled into shapes that look almost designed. Nature’s accident became one of the most perfect views in Turkey.
The Great Lake and the Wooden Walkway
The largest of the seven lakes, Buyuk Gol, is the heart of the park and the first sight most visitors reach. Its water is dark and still, reflecting the forested slopes that rise almost sheer from the shore, and on calm days the trees are doubled in the surface.
Around the lake runs a wooden walkway that is the most famous feature of the park. It hugs the water’s edge, rises over the boggy patches, and gives everyone, from grandparents to children, an easy way to see the lake from close up. The walk is short and gentle, and it is the best introduction to the park.
The walkway ends at the outlet where the water of the lake begins its journey downhill. From here you can return the way you came, or strike out onto the forest trails that climb away from the water.
Forests of Beech and Fir
The forest around the lakes is one of the finest in Turkey. Beech trees dominate the lower slopes, their smooth grey trunks rising through the undergrowth, while fir and other conifers take over higher up, where the climate turns harsher and the wind blows harder.
The forest is old and largely untouched. Many of the trees are tall and straight, the product of generations of growth in a valley that has been protected for decades. Moss hangs from the branches, ferns line the streams, and in the deep shade of the gullies the light is green and dim.
For walkers the forest is the great pleasure of the park. The trails wind between the trunks, crossing streams on simple bridges and climbing to viewpoints where the lakes appear far below. Every turn brings a new composition of trunk, shadow, and water.
Wildlife of the Silent Valley
The park is a refuge for the wildlife of the western Black Sea hills. Deer are the great prize of a Yedigoller visit: both roe deer and the larger red deer live in the forest, and early morning or late evening walkers may glimpse them at the forest edge.
The birds are the easiest wildlife to enjoy. Woodpeckers drum in the trunks, nuthatches work their way down the bark, and over the water you may see herons standing motionless at the lake edge. In spring the valley fills with the song of migrant warblers.
The rule of the park is simple: watch quietly and keep your distance. The animals of Yedigoller are wild, and the visitor who moves slowly and silently is the one who sees them. Bring binoculars and patience, and the valley will reward you.
The Seasons of Yedigoller
Yedigoller is a park of four distinct faces, and each season changes it completely. Spring is the season of new green, when the snow retreats, the streams run full, and the forest floor erupts in wildflowers.
Autumn is the season that made Yedigoller famous. The beeches turn gold, the maples burn red, and the reflections in the still lakes are so vivid that photographers come from across the country. Many people say autumn is the only time to visit.
Winter wraps the valley in snow and silence. The lakes freeze at the edges, the trails disappear under white, and the park closes to most visitors. It is a hard, beautiful season, and only the well-prepared should attempt it.
Hiking and the Forest Trails
The park is threaded with trails that range from easy lakeside strolls to longer forest walks. The most popular route is the loop around Buyuk Gol, which is gentle, well maintained, and suitable for almost everyone.
Longer walks climb the ridges above the lakes. From the high ground you look down over the whole chain of water, and on clear days the view stretches across the mountains to the distant plains. These trails take several hours and reward effort with silence and space.
The park also offers walks between the lakes themselves. A short trail links the upper lakes, passing through forest and over the streams that connect the basins, and it is the best way to see all seven without a map in your hand.
Picnicking and the Simple Pleasures
Yedigoller is, above all, a place of picnics. Around the lakes you will find tables and clearings set into the forest, where families spread their rugs, unpack their baskets, and spend the day by the water. The Turkish weekend picnic is an art.
The park provides the basics: tables, simple toilets, and rubbish bins. You bring everything else. Tea in a thermos, bread and cheese, fresh fruit, and a long afternoon by the water are the classic ingredients of a Yedigoller day.
Remember that you are in a national park. Carry your rubbish out, leave the wildflowers growing, and keep the water clean. The simplicity of the place depends on every visitor taking nothing but photographs and leaving nothing but footprints.
Why It Is Called Turkey’s Switzerland
The nickname Turkey’s Switzerland is easy to understand the moment you see the park. The combination of steep green mountains, dark pine and beech forest, and clear mountain lakes is the very picture of the Alps, transported to the western Black Sea region of Turkey.
Like Switzerland, the valley has a clean, alpine feel. The air is crisp, the water is cold and clear, and the landscape has a tidiness that seems almost managed, though it is entirely wild. The comparison flatters both places.
If you have seen the great monuments of the Turkish cities and coasts, the park offers the opposite experience: no crowds, no grand buildings, just forest and water and quiet. That contrast is precisely its power.
Protecting the Park for the Future
Yedigoller has been a national park for decades, and the protection has served it well. The forests have grown old, the water has stayed clean, and the wildlife has kept its home, while millions of visitors have come and gone.
As a visitor, you are part of the protection. Stay on the trails, use the bins or carry your rubbish out, keep your dog on a lead, and resist the urge to feed or chase the wildlife. The lakes have survived landslides and centuries; they should survive tourism too.
The future of the park lies in this simple contract. The valley gives its beauty freely, and in return it asks only that you leave it as you found it. Do that, and the seven lakes will shine for the next generation exactly as they shine for you.
Planning Your Visit
Yedigoller is easy to reach from the main Istanbul to Ankara highway, which passes within a short drive of the park. The nearest city is Bolu, and the park entrance is well signed from the road, making it a simple detour for anyone traveling between the two great cities.
The practical essentials are few: comfortable shoes, a picnic, water, and layers for the mountain air. The park has no grand facilities, and that is part of its charm. Come prepared and the day takes care of itself.
The best advice is also the simplest: arrive early, walk slowly, and give the valley time. Yedigoller is not a place to tick off a list; it is a place to sit on a fallen tree by the water and watch the light move across the forest.
Frequently asked questions
When is the best time to visit Yedigoller National Park?
Autumn, from late September to early November, is the most famous season, when the beech forest turns gold and the lake reflections are at their most vivid. Spring is lovely for wildflowers and full streams, and summer is warm and green but busiest. Winter brings snow and closes most of the park.
How do I get to Yedigoller National Park?
The park lies in Bolu province, northwest Turkey, close to the main highway between Istanbul and Ankara. The nearest city is Bolu, and the entrance is well signed from the highway. Most visitors arrive by car or tour bus; there is parking at the entrance, and the lakes are a short walk from there.
Can I camp or stay overnight in the park?
Yes. The park has designated camping and picnic areas where visitors can pitch a tent or park a caravan for the night, and staying overnight is the best way to catch the lakes at their quietest. Simple accommodation is also available in nearby villages and towns.
All Over Information
The All Over Information editorial team researches and writes practical English-language guides to Turkey. Facts are checked against official and local sources before publication, prices are published as dated ranges rather than quotes, and guides are revised when things change. We accept no sponsored posts, paid placements or paid links.
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