Unable to answer "What’s the surface firmness of this track?" – Track / Land-Access Road – way/166956134 via StreetComplete 63.4:

This is a private road to the property and is behind a gate.

"The path is overgrown and not passable even on foot"
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: 2025-06-08T00:18:23Z
POI has no name
POI types: highway-path hwtag-yesfoot
#organicmaps android 2025.10.07-1-Google

Unable to answer "What kind of memorial is this?" – Spanten station Bels Lijntje (Memorial) – node/6421355560 via StreetComplete 63.1:

Pillars of the proposed train station

Attached photo(s):
https://streetcomplete.app/p/347697.jpg