"Generate a high-quality 3D illustration concept art depicting a terrifying and abandoned Victorian-era mansion shrouded in dense fog. The mansion should be illuminated by eerie, flickering candlelight from within, casting long, unsettling shadows. In the foreground, include a gnarled, twisted tree with skeletal branches that seem to reach out menacingly. The scene should evoke a sense of foreboding and dread, with an emphasis on detail, atmosphere, and a palpable sense of horror."

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