Publisher's blurb: This PDF contains Old School Blue Map #20. It is the upper level of a temple complex. Last week's map (Old School Blue Map #19) was the initial upper level and the map before that was the ground level (Old School Blue Map #18). The PDF has multiple layers allowing the options for numbered/non-numbered areas, secret doors on/off, and grid/no grid and a zip file with all relevant map files as individual jpg images.