"It is gone many years ago"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2024-11-22T15:57:19Z
POI name: Stajnia Orkisz - Ośrodek Jeździecki
POI types: sport-equestrian
#organicmaps android 2026.09.29-32-Google

In fact there is no passage here for 300-500m meters- instead of the path there is a quite deep 30-50cm stream. So if you want to continue the passage, one have to stray make through the steep forest.