Unable to answer "What surface does this piece of road have?" for https://osm.org/way/29783872 via StreetComplete 53.0:

Mischung aus (beschädigtem) Asphalt, Schotter und Matsch.

Attached photo(s):
https://westnordost.de/p/153209.jpg
https://westnordost.de/p/153210.jpg
https://westnordost.de/p/153211.jpg