view of the calcareous grassland next to the fondry des chiens

221279228 acid agriculture angle attraction background belgium boulder calcareous cave charming chiens collapsed couvin depression des destination doline ecosystem exterior fondry forest geology grassland hill infiltration iron limestone low lush mineral mining monument nature next nismes ore outdoors pasture people photogenic picturesque pit protected rain rock scenic sinkhole tourism tourist tranquil tree valley vegetation view wallonia water wood