Mosty Kalińskie Nature Reserve

Kalińskie Bridges - a nature reserve located in the central part of the Mazowieckie Voivodeship, in the Zielonka commune, in the Wołomin poviat. A landscape reserve, whose purpose of protection is to preserve a fragment of the Długa river valley along with a mosaic of open forest and accompanying habitats. The "Mosty Kalińskie" nature reserve was created on June 4, 2015 under the regulation of the Regional Director for Environmental Protection in Warsaw of May 14, 2015. The reserve is located on land owned by the State Treasury, administered by the Regional Directorate of State Forests in Warsaw, the Drewnica Forest District. It is located within military training grounds in the Okuniewsko-Rembertowskie Forests and covers an area of 201,4409 ha. On the section of about 3 km, between the towns of Okuniew and Ossów, there is the valley of the small river Długa. The valley is 300 to 700 m wide, shallow and wetlands. In places, along its edges, there are low dunes covered with pine forests.

The river was lined with uneven concrete slabs. At higher water levels, it requires some skill from cyclists who do not want to get their feet wet.

It is not always possible to pass