That "shard" is corrupted. It's essentially leaking radiation everywhere. The Dark Forest gets weirder and weirder the closer you get to it.
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When the haunted forest was announced I was hoping it'd be the dark forest and we'd get to delve closer and closer to the shard
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Yeah. If anything it’s the closest to the Ascendant plane (like crota’s throne world) as a physical space could ever get to in this world. The metaphysical power leaking from the shard seems to just turn reality into Swiss cheese. For all we know it’s probably considered hentai to the Vex