Prosíčka, Natural monument in Borovnice, Czech Republic.

Prosíčka is a natural monument about two kilometres northwest of Jimramov, protecting a rocky ridge of two crags 55 m long and up to 17 m high, with a stone sea and scree slopes below. The summit of the same-named hill reaches 748 m and belongs to the Devítiskalská vrchovina within the Žďárské vrchy.

Prosička is a natural monument protecting a rocky ridge of two gneiss crags, 55 m long and up to 17 m high, with a stone sea and scree slopes beneath them. The site documents frost weathering of gneiss during the cold periods of the Pleistocene. The summit of the eponymous hill reaches 748 m and belongs to the Devítiskalská vrchovina within the Žďárské vrchy.

The name Prosička refers to the rocky ridge and its summit, called Prosíčka, at 748 metres. The blue hiking trail from Jimramov through Javorek to Odranec passes the rocks, and climbing is banned although the crags were once used by climbers.

The site is easily accessible with marked trails that guide visitors through different areas for closer views of the plants and rock formations. Information boards at the entry points help with orientation and explain the natural features you will encounter.

The rock formations at this location display visible traces of tectonic processes and erosion that worked over millions of years. Visitors can observe these natural patterns directly and experience physical evidence of geological history beneath their feet.