This 2007 video is about amateur geologists collecting rocks in the quarry of Winterswijk, the Netherlands.
What is now Winterswijk was then a coastal area.
In 1932, a local businessman started the quarry. Regularly, there were excursions by geologists and paleontologists, to find ancient rocks and ancient fossils.
Now, Belgian multinational corporation Sibelco owns the quarry. The local geological society is no longer admitted for excursions.
After 26 April 2017 in Winterswijk, we went to the quarry on 27 April 2017.
Before we arrived, an orange tip butterfly.
There is a short footpath to a part of the quarry where there is no commercial quarrying; and where an eagle owl couple, rare birds in the Netherlands, nests.
This video says about itself:
Eagle owl Winterswijk 01/06/2016
9 September 2016
These young, almost fully grown eagle owls showed well at the old quarry in Winterswijk, The Netherlands. They were quite active in broad daylight. At the end of the movie one of the chicks takes on a beautiful “defending my territory” pose to scare off a common buzzard.
A bit further: a chiffchaff singing. A buzzard flies.