Τα εισιτήρια πωλούνται από το m.stadt.sg.ch – φεύγεις από το Swiss Activities.
Περί τίνος πρόκειται
A volunteer maintenance event along a stream in St. Gallen, suited to people interested in nature and biodiversity protection. On site, shrubs, the hedge and the stream surroundings are cared for to help preserve this habitat.
