Deletion of Thangorodrim

Comment: into Minor places in Arda#I (for Iron Mountains), the article itself fails to establish the notability of the topic, per the complete absence of "significant coverage from multiple reliable independent sources" required by . Sources have been proposed in this discussion, unfortunately after careful review, all of them are only short, trivial mentions within plot summaries and do not provide significant coverage or |out-of-universe information such as origin, development, influence or reception, without which it is impossible to build an encyclopedic article that goes beyond a mere plot summary, per 
Stance: merge
Cited policy: Wikipedia:Notability (WP:GNG||WP:PASI||WP:NOTPLOT)