Protected area Dolní Marklovice, Natural monument in Petrovice u Karviné, Czech Republic

Protected area Dolní Marklovice is a natural monument by the Petrůvka River on the Czech-Polish border in Dolní Marklovice, part of Petrovice u Karviné in the Karviná District. It protects the Adamecký and Radecký ponds plus eight others, with reed beds and aquatic plants, and is a breeding site for the European fire-bellied toad.

The site was declared a natural monument by Regulation No. 1/2013 of the Moravian-Silesian Region, with effect from 2013. The protection covers the Adamecký and Radecký ponds and eight other ponds with their reed beds, and is managed by the Agency for Nature Conservation and Landscape Protection of the Czech Republic.

The protected area is a chain of ten ponds, including Adamecký and Radecký rybník, fed by the Radecký stream and the Petrůvka river on the Czech-Polish border. Its eutrophic still waters carry reed beds and patches of aquatic macrophytes, and the site is a breeding ground for the strongly endangered fire-bellied toad (Bombina bombina).

Access is available through marked trails that connect to cycling and hiking routes along the Czech-Polish border and lead to nearby border villages. The best time to visit is from spring through autumn when paths are dry and the surroundings are most green.

The protected area covers ten ponds, including Adamecký and Radecký rybník, fed by the Radecký stream. It is a breeding site of the strongly endangered European fire-bellied toad (Bombina bombina), which is the main object of protection.