Prompt: Write a short story about a man who discovers a magical portal

Warren was walking through the woods, admiring the autumn colors when he saw something out of the ordinary. A small, circular clearing had emerged in the trees, and in the center was a large, blue portal. Curious, Warren stepped closer to take a look. As he did, he felt a sudden jolt, and the ground beneath his feet disappeared. Sensing something was wrong, Warren quickly pulled his phone out of his pocket and called for help. Seconds later, he was met by paramedics who had been called to the scene by his emergency phone. They found him lying on the ground, unconscious but still breathing. It was later revealed that Warren had accidentally stepped through the portal while exploring the woods, and was now in a different dimension. Thankfully, he was safely returned to his own world later that day.