Thanks for the nice comments!

Ok, thanks. Any interesting quarry-mapping experiences you’d like to share?

Hi. Yes, you’re probably right. I should improve the tagging. I remember though that I found the suggestions in the wiki not matching my case.

Do you have any example of your mapping adventures?

What do you mean, “in the end”? I have mapped the outline of the holes for each little quarry. I do this be walking along the perimeter once. Sometimes it is hard since there may be trees in the way, or it may be a bit dangerous since you may fall into the hole. In the latter case I walk a little further away…

Thanks for the comments.

Hi, yeah I guess I should do that as well. I haven’t been using Mapillary for a long time, but I know I should…

No worries, it usually happens when I am mountiainbiking.

The SRTM data? It was a couple of years ago that I checked, but according to osm.wiki/SRTM , it is in the public domain.