It is one of the coldest locations in the Czech Republic, where temperatures have been recorded below freezing even in summer months.
The bog is home to the rare dwarf birch (Betula nana), a glacial relict species.
The peat formation here began approximately 10,000 to 12,000 years ago following the end of the last glacial period.
The area is an important nesting site for the endangered black grouse.
Jezerní slať is part of the Vltavský luh national nature reserve.
The boardwalk is elevated to prevent human disturbance of the protected peat-forming mosses like Sphagnum.
Jezerní slať is a high-altitude peat bog situated at 1,068 meters above sea level within the Šumava National Park. The protected area covers 105 hectares and serves as a vital hydrological reservoir for the region. Visitors traverse the bog via a wooden boardwalk that protects the fragile ecosystem from soil compaction. The site features a 21-meter-high observation tower offering panoramic views of the surrounding spruce forests and the Vydra river basin. This location is one of the coldest spots in the Czech Republic, frequently recording temperature inversions. The peat layer in the bog reaches depths of up to 7.6 meters. It is categorized as a transitional bog, showing characteristics of both raised and valley mires.
The top platform of the observation tower for a full view of the bog surface and the surrounding Šumava peaks.
Bring binoculars for birdwatching and to get a closer look at the distant ridges from the observation tower.
Wear layers, as the microclimate at this altitude is significantly cooler and windier than in the surrounding valleys.
Visit early in the morning or late in the afternoon to avoid peak crowds and experience the bog in its quietest state.
Stepping off the wooden walkways, which damages the bog ecosystem and is strictly prohibited.
Accessible year-round, but snow may cover sections of the walkway in winter months.
Stay strictly on the wooden walkway to prevent damaging the delicate peat moss; keep dogs on a leash.
