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ČGS Olomouc

NM Boulder Streams near Domašov

The examples of frost weathering (frost-riven cliffs, boulder fields) are the remnants of the last Ice Age and show the climate impact on the terrain form and evolution. The whole evolution of the boulder stream from the frost-riven cliff at the upper edge of the Dvorský hill (606.5 m ASL) down to the valley is apparent here. A total of 12 bolder streams form the aggregated fresh sharp-edged blocks of greywackes and conglomerates. The surface of higher streams is terraced and distinctly waved. The width of boulder streams reach 10 m, sometimes even 16 m, and the longest boulder stream is 165 m long. The boulder streams begin in what is called the collecting points under the nearly 3 m high rock exposures (amphitheatre depression). The main processes during their evaluation included the frost weathering and the movement on the slope as result of ice. The whole site is currently covered with continuous forest and the boulder streams do not move any more. The site is quite unique in the Nízký Jeseník Mountain Range.

GPS position

N 49° 43.624', E 17° 26.831'



Česká geografická společnost
Mgr. Petra Karvánková, Ph.D.
Katedra geografie PF JU v Českých Budějovicích, Jeronýmova 10, 371 15 České Budějovice
Tel.:+420 387 773 063