Migoń, Piotr, and Edyta Pijet-Migoń. “Not Simply Volcanoes – The Geoheritage of the Cretaceous System in the Land of the Extinct Volcanoes Geopark, West Sudetes (SW Poland)”. Geotourism/Geoturystyka 17, no. 1-2(60-61) (December 28, 2021): 3–22. Accessed March 14, 2025. https://journals.agh.edu.pl/geotour/article/view/4410.