The grotto on the edge of the forest near Schlacht probably dates from 1870. It is owned by the Kleinmayr family - the great-great-grandfather of the current owner built it. A May prayer has been held annually for several years, weather permitting. Due to the pandemic closed churches, the grotto is enjoying growing popularity among believers and interested parties. sueddeutsche.de/muenchen/ebersberg/lourdesgrotte-glonn-1.4928390