Protected area Momina Skala is located on West from Madzharovo on the right shore of Arda river and on South from the other protected area - The Black rock. The protected area is located on the lands of two municipalities - Madzharovo and Bryagovets village, Krumovgrad.

In Momina Skala are registrated around 600 species of plants, 300 species butterflies and 160 species vertebrates. Significant part of them are globally endangered.
From the plants specially precious are Fritilaria pontica, Steffanophia daucoides, Orhis papillionacea, Cleome ornithopoides,Micropirum tenelum.
From the animals common are Testudo hermanni, Testudo graeca, Ophisaurus apodus, Circaetus gallicus, Aquila hrysaetos, Pernis apivorus, Neophron percnopterus, Monticola solitarius, Monticola saxatillis, Sitta neumayer, Lanius senator, Emberisza hortulana. From the mammals interesting is the forest dreamer - Dryomys nitedula, which population decrease globally.

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