Just curious to know which level designer created the map Q2DM1 on Quake 2.
I believe it was Tim Willits... I remember seeing an interview with him where he was credited for creating "possible the greatest map ever", "The Edge". I tried finding it- a quick Google search only returned various references to him being the creator.
At any rate, I'm quite certain he is the original creator. He even did a remake or two for other id tech based games.