Are there obsidion trees in minecraft ps3? Or is this herobrine? Or a gltich?

Ok, so i was playing on a new world on minecraft, and i was exploring and found this obsidion tree. If you dig down to bedrock theres lava, but idk if that means anything. This is freaking me out a bit. If your a minecraft player can you tell me if youve seen this before? Please help!

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