I know that there are some campaign tiles that are epic defense points that have been custom created by the team and placed across the map...
These are the confirmed customised tiles:
One tile East of Moria.
One tile West of Rivendell.
One tile West of Minas Morgul. - FC Groningen
These are tiles that are not customised, but are exploitable (use at the risk of your own conscience!):
The bridge near Litash (East of Carn Dum). - NickTheGreek3
The bridge East of Kugavod. - TBC
Please let me know if anyone has found any others and please describe their whereabouts or co-ordinates.
Thanks!