Rašeliniště U jezera - Cínovecké rašeliniště, Nature reserve at Cínovec, Czech Republic.

Rašeliniště U jezera - Cínovecké rašeliniště is a nature reserve north of Košťany in the Teplice district, protecting a raised bog at 876 m in the Krušné hory. The bog shelters species such as the heath spotted-orchid, the common viper, the viviparous lizard, cranberry and marsh Labrador tea.

The wetland began forming around 7,000 years ago, with thick peat layers accumulating mainly over the past 3,000 years. This long development created the landscape shaped by water and limited nutrients that exists today.

The reserve lies just north of Košťany in the Teplice district, and a matching protected bog, the Georgenfelder Hochmoor, sits on the German side of the border. The name Cínovecké rašeliniště refers to the nearby town of Cínovec, and the site is one of the endangered ecosystems of the Krušné hory.

The reserve lies at 876 m above sea level north of Košťany, in the Teplice district, and is managed by the Ústí nad Labem regional authority. Access is on foot; the terrain is boggy, so wear sturdy shoes and stay on the marked paths. A similar protected bog, Georgenfelder Hochmoor, lies across the German border.

The reserve protects a raised bog at 876 m with bog rosemary (Rhododendron tomentosum) and cranberry (Vaccinium oxycoccos), alongside the common viper and the viviparous lizard. On the German side of the border lies the similar Georgenfelder Hochmoor.