EQBQrM6R6qE53ZLto5HbuB5nb03XuUpDhhKsXP3fyNQmEY0L

You're holding a postcard. The landscape depicted on it seems vaguely familiar: perhaps you've seen it in a dream? Or is it from a tale you've heard long time ago? Doubtfully, you flip a card to check its back – address and postage stamps are correct. But how is that even possible if the post hasn't been in service for decades?