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Nature reserve · Cisnădioara (Valea Argintului) · Free

Piatra Broaștei

A Cretaceous limestone rock with marine fossils that looks like a frog. It is a 1-hectare protected area at the edge of Cisnădioara village.

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What to see
Original Sibiu.info photography, in production
Why it's on the list

It is a short walk from Cisnădioara to a fossil-rich rock, scoring 4.5 from almost 470 Google reviews.

Sibiu.info editorial team · Checked October 2026

About the place

The rock is an old coral reef made of Cretaceous limestone. You can see fossil remains of molluscs, corals and fish in it. Frost, wind and water shaped it, and from one angle it looks like a frog.

The site was declared a natural monument by Law 5 of 2000 and covers one hectare. It lies within the town of Cisnădie, south-west of Cisnădioara village, near county road 106D. Google shows 4.5 from almost 470 reviews.

Good to know

  • Do not climb the rock; it is protected and you can slip.
  • You reach it on a forest track in Valea Argintului, not on asphalt; wear suitable shoes.
  • Combine it with the Cisnădioara basilica in the same afternoon.

Opening hours

Opening hours are not confirmed. Check the venue's website before you go.