Board Thread:Suggestions forum/@comment-27991709-20160801171429/@comment-26172435-20160801172714

Do you have any idea of how valuable any type of oil may have been in the early middle-ages? And if a defending party would have had it, how they would have been able to handle the stuff without exposing themselves to hazards?

Defenders throwing rocks, garbage or even excrements on attackers would have been more likely.

Only the main strongholds of the world, maybe just two in existence on TA ME, would have been able to get this defensive weapon on their ramparts ... if they had oily / tarry substances. Only candidate I can think of is Mordor. Only candidate strongholds seeing the need to maintain such defensive means could have been Minas Morgul and the Black Gate. Other Mordor strongholds wouldn't have assumed assault from external forces likely imo.