Čimické údolí, Natural monument in Prague, Czech Republic

Čimické údolí is a natural monument between Čimice and Bohnice in Prague, covering 10.82 ha at 240–270 m. The Čimický potok flows through it, cutting a shallow valley that deepens into Proterozoic greywacke and shale, with isolated rock outcrops and veins of Ordovician tonalite porphyry.

Čimické údolí was declared a protected natural monument in 1968. People have used the land since the Stone Age, first mainly for farming: deeper soils were ploughed as fields, while the slopes and rock outcrops served as pasture. Later the south-facing slopes were turned into orchards growing cherries and sour cherries, and remnants of these orchards and lone fruit trees still stand along the valley.

The name Koztoprtský rybník, a pond at the western end of the valley, recalls the "goat's paths" (kozí prtě) trodden into the slopes by grazing goats. Cherry and sour-cherry orchards once covered the south-facing slopes, and abandoned orchard trees still stand along the valley.

The valley lies between Čimice and Bohnice, sloping west toward the Vltava; the western end, with Koztoprtský rybník, is bordered by fields and meadows, the eastern part by housing. The stream is partly diverted underground into a sewer in the upper valley. Paths climb the south-facing rocky slopes, so sturdy footwear helps.

The rare plants grow on Proterozoic shale and greywacke, not limestone; the pasque flower here is the Bohemian subspecies (Pulsatilla pratensis subsp. bohemica), and the Czech gagea (Gagea bohemica) also grows on the shallow soils.