Translated from the Dutch Mycological Society:
Jan 20, 2016 – On the Papenberg dune a number of endangered goblet funnel cap fungi has been found. Things go badly for this rare mushroom. Acidification of its habitat will probably cause that. The discovery on the Papenberg raises many questions. A few decades ago they were still found massively here. It is likely that fungi in the area have not been monitored for a long time.
The Papenberg is a high dune just west of railway station Castricum.
Rare fungi in Dutch Ilperveld: here.