RPG Insanity

i'm havng a hard time finding or locating the gold key in the ruins lower stratum is. does anyone ha a map or set of maps for all floors of the ruins showing wher the gold door key is?

What version are you playing? Remake? Because if so, check your map at the northeast side and there's a place there with the key.

i'm playing the pc version and am close to final boss fight i just can't find the key for the gold door to save my life.