Ys Origin 13th floor - need help

[flays02]

Well i was searching for too long , i cant even count the hours anymore , i just cant seem to find the 4th torch, on the 13th floor where the medallion probably is for the boss room there are 4 purple circles on the floor, you have to lit 4 torches so that they all vanish, but i just cant seem to find the 4th one , i was searching like shit
well it showed me the locations how the surroundings of the torch look like, this is the screenshot of the 4th one, but i cant find it T_T help i dont know where it is

www.loaditup.de/713734-p9vhw292hv.html

[Ascended Mermaid]

Go as far southwest as you can go, past the bridge. If my faint memory is correct, that should lead to the area you are trying to reach. That's the only thing that makes sense to me, given the geography of the image.

[flays02]

THANK YOU! i was searching the whole map and i couldnt find it, but well didnt know there was another area in south west , i went there over 10 times and missed that there is another space to go through xD