Best waterfalls around Semily are found within the broader region, particularly near the Jizera River valley and towards the Giant Mountains. This area is characterized by its natural landscapes, including river canyons and forested trails. While Semily itself does not host major waterfalls, the surrounding territory offers various water features. The region provides opportunities for outdoor activities centered around its rivers and natural monuments.
Last updated: July 2, 2026
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Mumlava Waterfalls - the biggest attraction for tourists around Harrachov
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Ideal for beginners. Gentle ascent to Mumlavska.
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Ideal for beginners. Gradual ascent along the Mumlavska.
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A very nice route. It is not very demanding, so it is also suitable for beginners. However, on the way there it goes permanently uphill, so that you can work up a sweat, while on the way back it is only downhill. There is then a risk of freezing here. Breathable clothing is helpful here.
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That is much bigger than the Ilse Falls, a wonderful natural spectacle like the whole way despite the tar road, small paths lead to the most beautiful places.
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The most beautiful place to cool off in summer.
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The most prominent and highly regarded waterfall in the wider Semily region is the Mumlava Waterfall. It's known for its impressive size and powerful flow, especially after snowmelt. Visitors often describe it as a wonderful natural spectacle.
Yes, the Mumlava Waterfall is very family-friendly. An asphalt road from Harrachov makes it easily accessible for pedestrians and cyclists. The area around the waterfall offers peaceful spots and is a popular destination for all ages. Additionally, the Rieger Trail along the Jizera River Valley provides a beautiful and engaging experience for families, with its cascades and unique suspended gallery.
The best time depends on what you want to experience. In spring, after snowmelt, the Mumlava Waterfall is at its most powerful. During summer, the water flow is calmer, offering pleasant spots for cooling off. In winter, it can transform into a massive icefall, providing a unique and beautiful sight.
Absolutely. The Mumlava Waterfall is a popular starting point for treks into the Krkonoše Mountains. You can find several hiking routes, such as the "Trail to Mumlava Waterfall – Mumlava Waterfall loop from Harrachov," which is a moderate 7.7 km hike. For more options, explore the Hiking around Semily guide.
The Mumlava Waterfall is famous for its "giant pots" or "devil's eyes." These are large, round granite formations carved out by the erosive force of the water, both above and at its base, and are among the largest in the Czech Republic.
The Mumlava Waterfall is highly accessible year-round. An asphalt road leads directly to it from Harrachov, making it suitable for both pedestrians and cyclists. There are also benches nearby, like the Bench Near Mumlavský Waterfall, for resting and enjoying the view.
Beyond the Mumlava Waterfall, the Jizera River Valley offers a captivating experience, particularly along the Rieger Trail (Riegrova stezka). Here, the river flows through a deep canyon with numerous cascades and flows over large stones, creating a picturesque waterscape. While not a single large waterfall, the continuous flow and rock formations are very scenic. Another, smaller feature is the Pilský vodopád near Harrachov, an artificial waterfall approximately 4.5 meters high.
The area around the waterfalls, especially near Mumlava, is excellent for cycling. You can find traffic-free bike rides, such as the "Mumlava Waterfall – Krakonoš's Breakfast Hut loop from Harrachov." For more cycling routes, check out the Traffic-free bike rides around Semily guide.
Yes, near the Mumlava Waterfall, there is a lodge or hut. Visitors have noted a restaurant nearby, with tips mentioning delicious lentil soup, perfect for warming up. You can also spot a unique Fence with decorative cups at the lodge.
The Mumlava Waterfall is nestled within a beautiful forest environment, part of the Krkonošský National Park. The surrounding area features lush trails, a flowing river, and offers a true immersion in nature, making it a popular spot for those seeking tranquility and scenic views.

