The share of CaCO3 in the deposits exceeds 50%. Peat 1.5 m thick occurs in upper part of lithostratygraphical profile. Non-forest communities, mostly meadow ones, dominate in vegetation.

Habitat types existing in the area:

• Alkaline fens
• Transition mires and quaking bogs
• Molinia meadows on calcareous, peaty or clavey-silt-laden soils (Molinion caeruleae)

The area lies in the Area of Protected Landscape of Pradolina Redy-Leby (18 933.5 ha; 1994). Part of the area is protected as a site of ecological interest (Pryzniewska Meadow; 3.6 ha). Designation of the Orle nature reserve is projected. The area is also a part of the Promotional Forest Complex of Lasy Oliwsko-Darzlubskie (43171.97 ha).