>>23403064http://www.glitterberri.com/pokemon-red-blue/early-concept-art/14/http://glitchcity.info/wiki/index.php/Map_0BSince it was isolated and there was an unused warp at Celadon city I think that the building with the unused warp was a tunnel to the unused city like the tunnel to the east of Celadon. Although, maybe you could just swim to it though because the bike course was different.
