Remember Those Posters?

Hi hive mind. When I was a student in the late 90s, in the UK, one could buy posters in (approx) A1 or A0 size that was had a D&D theme (not the TM material). One could see for example many small-to-tiny details, tribesmen in a valley sitting around a fire, dragons fighting in the sky, rivers flowing and someone fishing. Imagine the easter eggs on the album cover of Iron Maiden - Powerslave, but on a poster and make that dragon/fantasy themed x50 on the surprise-details.

Anyone knows where I can find such posters, or their PNG/PDF? I remember enjoying looking at one (I had 3-4) back in the day, and I wanted to find something similar now.