Who’s idea was it to make the Well in the Yawning Portal so big?

who’s idea was it to make the Well in the Yawning Portal so big? Who ever it was probably looked into the future and saw my frustration with trying to build a 3d interpretation of it.. and was like “his headache makes this all worth it.” It was that size when I first imagined it. In 1965, when I was six.
But I was a model railroader back then, modelling things with wood and cardboard and all sorts of odds and ends, and it was the candle-wheel chandeliers in the Portal that gave me headaches, not the well. ;}

— Ed Greenwood (@TheEdVerse) September 24, 2018