School trip

It was supposed to be a normal school trip. A walk in the woods, some boring information about trees and then back to the bus. But I... got lost! It happened completely by accident. A moment of inattention as I stopped to tie my shoe. When I raised my head - everyone had disappeared. There was no class. There was no teacher. I was alone. My heart beat faster. - Hello! Is there anyone here! Silence. I moved ahead. The road looked familiar, but.... something was wrong. After a few minutes, I saw something that was definitely not there before. In front of me, just behind the dense trees, an old stone passage appeared, overgrown with ivy. It looked like the entrance to something hidden. I moved closer. There was an inscription carved on the stone. But not in a language I knew. I put my hand on the cool stone and.... something started to happen. The sign flashed with a golden light. The wind broke from nowhere. I heard a voice: "You shouldn't be here.... But since you've come..." And then...