Best way that I found to get relic iron. PLEASE let me know how you do when using this method and if I missed any good spots to check in that area.
(Sorry for bad commentary, it is my first time and my mic is very sensitive to background noise.)
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you actually just passed my favourite place it's moments after video started of to your right before entering first tunnel there was someone lvl 27 playing there already there for all i know could have been me there is about 2 to 4 chests constantly re-spawning in about hour of play got about 200-300 of them even scored two legendary engram's got s... out of them but yeah only worry as the place is spawning continuously 4 cabal and 5 goblins with minotaur leading them all lvl 15