The conversation between human and AI assistant.
Why were Thranduil's family heirloom jewels in Erebor?
Oh, I see. That makes sense. But why didn't he take them back to Mirkwood after the war ended?
According to records, Oropher died during the Battle of Dagorlad, and Thranduil's family jewels remained in Erebor as part of the tribute paid to the mountain by the Woodland Realm.