Quoted By:
Route 5-6 Underground Path has an inacessible bit at the bottom in Gen 1. Source code leak revealed that an earlier version of this map had a staircase in the middle (leading to the entrance at Route 7 that was ultimately scrapped). Instead of removing the staircase, developers erased the whole row where it was placed, leading to all tiles being shifted up by one tile, freeing space at the bottom (the game engine automatically fills is with tiles currently loaded in memory)
