They've really blocked off traffic.
I figured they'd be heading for Seoul Station, but they took another turn.
They headed past Seosomun north toward Seodaemun.
You can see them winding around the corner here.
Please remember that these photos are all copyrighted to me. If you want to use them in any way, there's a 90 per cent chance I'll give you my permission, and be able to give you a copy with a higher DPI.Copyright Daehanmindecline 2016