The Winterswijk Quarry is an active quarry located east of Winterswijk and is mined for (mainly) limestone. The area is famous for its fossil findings, like bones and fossilized tracks of multiple species of extinct reptiles, called Nothosaurs. The oldest part of the quarry has been given back to nature and is home to a breeding pair of Eurasian Eagle Owl. An observation screen has been placed near the old quarry to observe the nesting Eurasian Eagle Owl. They breed on a small ledge on the northwestern part of the quarry wall.
Surrounding the valley, extensive forests are located and provide ideal habitat for many species of breeding bird, like Spotted Flycatcher, Common Redstart and European Pied Flycatcher. All five species of woodpecker can be found in the area, like Lesser Spotted Woodpecker and Middle Spotted Woodpecker. The quarry itself is also home to Black Redstart.
The active quarry, west of the Eurasian Eagle Owl quarry, contains multiple ponds and provide a great habitat for Little Ringed Plover and Grey Wagtail. The scattered bushes and trees near the edge of the quarry are great for Yellowhammer, Greater Whitethroat and Lesser Whitethroat. In winter, Great Grey Shrike can be found here too.
The quarry provides a great open view of the sky and is therefore a great spot for observing raptors, like European Honey-buzzard, Red Kite and Northern Goshawk.
The area is easy accessable due to the parking lot near the road and the unpaved pathway towards the observation screen.