صفر is a user on mastodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
'Fog in Northern Italy during the XIX and early XX centuries'
https://www.reddit.com/r/etymologymaps/comments/8bhn79/fog_in_northern_italy_during_the_xix_and_early_xx/
