Billetal, Nature reserve near Wentorf bei Hamburg, Germany
Billetal is a nature reserve following the Bille River through areas shaped by ancient glaciers, with wet meadows, spring-fed slopes, and established woodlands. The protected land spans across eight municipalities and displays the natural results of Ice Age meltwater activity.
The valley formed during the last Ice Age from melting glacial water, shaping the terrain that exists today. Official protection came in 1987 to preserve this glacially-formed landscape for the future.
The Bille here flows past the Grander Mühle mill and empties into the Reinbeker Mühlenteich, and both mill sites recall the river's long use for water power. The reserve lies directly on the Sachsenwald, so a visit can combine the river valley with the adjoining forest. The name Billetal simply refers to the valley of the Bille.
A hiking route of roughly 17 kilometers connects different access points with varying walk lengths depending on where you start. Spring through autumn offers the best conditions, when paths are dry and the area is most accessible.
The Bille here holds fish that demand clean, oxygen-rich water: brown trout, grayling, stone loach and minnow. Birdwatchers look for kingfisher and grey wagtail, while the white-throated dipper winters on the stream. The reserve adjoins the Sachsenwald forest directly.
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