Repedea Hill Fossil Site, Nature reserve in Iași County, Romania.

Repedea Hill is a nature reserve featuring limestone walls, abandoned quarries, caves, and plateau sections at the edge of the Moldavian Plateau. The protected area is divided between a strictly managed scientific zone and a surrounding buffer zone to ensure preservation.

Professor Grigore Cobălcescu started geological investigations here in 1862 and published discoveries about local fossil fauna. His research became foundational for the development of Romanian geology.

Grigore Cobălcescu's 1862 article "Calcariul de la Răpidea" is regarded as the founding text of Romanian geology, and the site is Romania's first geological reserve. The name Repedea refers to the hill above the former quarries. Visitors can still see the oolitic limestone walls and caves where the fossil beds were opened.

Visitors should prepare for uneven terrain and rocky surfaces by wearing sturdy footwear. Access is regulated to protect the geological formations, so plan your visit ahead.

Grigore Cobălcescu's 1862 article "Calcariul de la Răpidea" is regarded as the first Romanian work of geology. He identified two limestone layers and named a new species, Cardium Cobălcescu, among more than 40 mollusk species found here.