After writing his letter Joseph Le Perdriel continued his search after the Obscure Cities. The Authorities had forbidden him, according to himself, to leave the town so he put all his efforts on finding a passage in Groningen. The museum, the 5 chimneys, he searched very hard for clues. It is strange to read how he felt about the meetings we had. He knew a lot but if he really found the passage as he claims, I don't know... At least this is the last sign of life I can find of Joseph.