Podolský profil

Podolský profil is a small but geologically remarkable nature reserve in Prague, tucked into the hillside above the Podolí Swimming Stadium on the right bank of the Vltava River in the Prague 4 – Podolí district. The protected area covers just 2.75 hectares, yet its scientific significance reaches far beyond its modest size — it is one of the key sites on Earth for observing the boundary between two geological eras.

What is this site and where does its name come from?

The name "Podolský profil" comes directly from the Prague district of Podolí where it lies, combined with the distinctive shape of the outcrop, which resembles an inverted horseshoe opening to the west. The site exists as a byproduct of human activity: for generations a limestone quarry operated here, with the earliest records of mining dating back to 1770. Extraction continued until it was finally halted in 1941, leaving behind exposed rock strata of enormous scientific value.

Why is this location so geologically important?

Podolský profil is one of the few well-accessible and clearly legible profiles in the world showing the transition between the Silurian and Devonian periods of the Paleozoic era. It is here that an internationally recognized reference profile (stratotype) for the Silurian-Devonian boundary was designated, making the site a benchmark for geologists worldwide. The exposed strata include the Přídolí, Lochkov, and Prague stages — successive geological stages spanning this transition.

Of particular value is the Požáry Formation, which at this location offers one of the few easily accessible outcrops containing a rich fossil fauna. The rocks have yielded numerous fossils of bivalves, trilobites, brachiopods, and corals. Podolský profil is also where the oldest known fish remains discovered in the Czech Republic were found — a fact that alone makes the site unique on a national scale.

When did the reserve gain protected status?

The area was granted the status of a natural monument (přírodní památka) in 1988, formally protecting the rock outcrops from further degradation while enabling scientific research and public access.

What else can visitors see besides the rocks?

While Podolský profil is best known as a geological site, it also functions as a small refuge of nature within a densely built-up part of Prague. The area shelters numerous bird species and small fauna, and the adjacent park at Kavčí hory, near the Czech Television headquarters, offers a pleasant walking route that combines nature with views over the city and the river.

Frequently asked questions

Where exactly is Podolský profil located? The reserve lies in Prague 4, in the Podolí district, on the slope above the Podolí Swimming Stadium along Podolská street, on the right bank of the Vltava River.

How is a přírodní památka different from other forms of nature protection in the Czech Republic? It is one of the categories of small-scale nature protection in the Czech legal system, typically applied to sites of exceptional scientific, geological, or landscape value — as is the case with this rock outcrop.

Can visitors photograph the fossils on site? The area is open to visitors, but as a protected site it requires respect for conservation rules — chipping away or removing rock fragments or fossils is not permitted.

How long did limestone quarrying continue at this site? According to the earliest records, quarrying took place from at least 1770 until it was permanently discontinued in 1941.

What makes this site important on an international scale? Podolský profil contains one of the world's recognized reference profiles for the Silurian-Devonian boundary, making it a key benchmark point in the global geological time scale.