Osypané břehy, Natural monument near Strážnice, Czech Republic.

Osypané břehy is a natural monument in the Strážnické Pomoraví nature park, 2.5 km northwest of Strážnice on the Morava, one kilometre before its confluence with the Velička. It protects three meanders cut into wind-blown sands, where the river has carved sand walls up to 12–13 m above the floodplain.

The site was declared a natural monument to protect the last stretch of the lower Morava with a natural channel, where the river cuts into wind-blown sands and builds sand walls up to 13 m high. It lies within the Strážnické Pomoraví natural park and the Natura 2000 network.

Karel Zeman's 1955 film Journey to the Beginning of Time used the meanders and sand walls as exteriors, though the Slovak Wikipedia notes this claim is disputed. The site is also a nesting ground for birds such as the common kingfisher and the white stork.

The monument lies 2.5 km northwest of Strážnice on the Morava, one kilometre before its confluence with the Velička, with a large sandpit (Bzenec-Přívoz extraction area) immediately beside the reserve. The three meanders and their banks are reached on foot; the sandy wall rises up to 12–13 m above the floodplain, so expect steep, unstable ground at the water's edge.

The Morava cuts its meanders into wind-blown sands, leaving sand walls up to 13 metres above the river. Exposures in the riverbed let researchers study both river and wind-laid sediments. Karel Zeman's Journey to the Beginning of Time was filmed here, though the claim is disputed.