The Icelandic Postal Service does good work

That's an excellent map!

I remember years back when this was first posted someone commented that drawing maps is not uncommon because of the terrain and dirt roads makes it difficult to find places. It's considered a genuine method to use for the post office to make sure your mail gets where it needs to go.

i wouldn't classify that map as rudimentary. I bet I could find it using Google maps

I'd definitely not call that a rudimentary map