Cryptography and steganography has intrigued me for years, and solving this together with @pusen was great fun, learning a lot along the way!

As a very big bonus, I was introduced to HIVE and LEO, totally new concepts for me which I'm really looking forward to explore!

Who knows, maybe I'll write something on steganography...? And geocaching, a very precious hobby for both @pusen and myself...?

Thank you very much for the puzzle @onealfa and for quality messenger-time @pusen - looking forward to new puzzles!