The stairs from the football field are leading around the tree and further up until they vanish in the grass on the hill

via StreetComplete 57.4

Attached photo(s):
https://westnordost.de/p/216810.jpg
https://westnordost.de/p/216811.jpg
https://westnordost.de/p/216812.jpg
https://westnordost.de/p/216813.jpg
https://westnordost.de/p/216814.jpg