There is a second chest about half way through the abyss. It's about half way through. There was no orange light above the door from what I remember. It was to the left of the path. I was taking a short cut to catch up so it was before a left turn on the path. I only got shards. Haven't heard of anyone has got anything different from it. If so let us know.
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There's 7 posssible spawn spots for it