birch tree and path in moorland of nature reserve dwingelderveld, drenthe, netherlands

acid autumn birch blue bog caerulea canal copy deposition drenthe dutch dwingelderveld environment europe european fall fen footpath grass heath heather heathland heide holland holtveen kraloer kraloo landscape molinia moor moorgrass moorland moors national nature netherlands nitrogen nobody park path peat people pond pool puddle raised reserve sky soil space tree water wetlands