Blindensee, Raised bog lake in Schönwald im Schwarzwald, Germany.

Blindensee is a raised bog lake on the territory of Schönwald im Schwarzwald in the Black Forest, within the Schwarzwald-Baar-Kreis district of Baden-Württemberg. It has neither an inflow nor an outflow and lies in the middle of a raised bog like an eye, which is why it is also called Moorauge. The lake is only accessible via a boardwalk.

The Blindensee nature reserve was established by decree of the Südbaden regional council on 2 March 1960, under reserve number 3.056, covering 28.5 hectares. It later became part of the 1,722-hectare FFH area 7915-341 Schönwälder Hochflächen. The reserve protects the raised bog around the lake, which has no inflow or outflow.

Locals call the lake the "Moorauge" (bog eye) because it sits like an eye in the middle of the raised bog. Two legends surround it: a cow said to have drowned here and resurfaced weeks later in the Danube, prompting an attempt to dye the water and prove a link, and a drover who vanished with his horse team. A wind turbine stands near the reserve and is visible from the shore.

The Westweg hiking trail passes through the reserve and provides straightforward access to the lake. Wooden pathways and viewing platforms allow visitors to explore the bog without disturbing the sensitive terrain.

A local legend holds that a cow drowned in the Blindensee and reappeared weeks later in the Danube. The tale prompted an attempt to dye the lake water to prove a subterranean link with the river, which failed. Another story tells of a drover who vanished with his whole horse team in the water.