A potentially devastating fungal disease is threatening kamsalamander populations in the Ooijpolder nature reserve near Nijmegen, Netherlands. Researchers have identified two invasive fungal species, *Batrachochytrium dendrobatidis* (Bd) and *Batrachochytrium salamandrivorans* (Bsal), as the likely cause of a significant decline in the protected salamander species since 2017. These fungi cause chytridiomycose, a deadly infection affecting amphibians. Conservationists are warning hikers to exercise caution and practice strict hygiene to prevent further spread of the disease, as infected amphibians are difficult to detect. The decline mirrors a previous decimation of the fire salamander population in 2017 due to the Bsal fungus. Experts fear the same fungi may be impacting kamsalamander populations in other regions of the Netherlands, including Limburg and Zutphen.