The mountain relief of the park is very varied, depending on the method of formation and the geological era in which it was formed. Thus, we find here glacial relief, periglacial relief, volcanic, structural relief and areas with relief developed in crystalline and chalky rocks. Thanks to the diversity and importance of the relief forms here, in the park there are four protected areas: Sâlhoi-Zâmbroslavile Cliffs (5 ha), Cornu Nedeii - Ciungii Bălăsânii (800 ha), Farcău-Vinderel–Mihailecu (100 ha) and the Glade with daffodils Tomnatec-Sehleanu (100 ha). Apart from these, in the area there are over 30 caves of low sizes and a few waterfalls.
Flora is representative for Eastern Carpathians and includes a large number of endemic plants of Carpathians as well as many rare species or species protected by law (arnica montana, globeflower, edelweiss, lady's slipper, campanula, sundew. Fauna is very rich with a large number of rare, protected and endemic elements (Carpathian bear, lynx, mink, wolf, marmot, boar, otter, wood grouse, Lyrurus tetrix, wagtail, eagle, hawk, blackbird, raven, hazel grouse). The rivers and lakes from Maramureșului Mountains Park shelter very rare species in the country or endemic to the area: taimen, trout, broad snout, grayling, European Chub.