The entrance is located in the building at the end of the slide as in the picture.
Vstup je umístěn v budově na konci snímku jako na obrázku.
https://www.google.it/maps/@50.0777601,14.5098569,3a,75y,190.19h,88.57t/data=!3m6!1e1!3m4!1scfrn6fRVCAvR3LfeIAwwNQ!2e0!7i13312!8i6656