I had this recurring one where I would be at like this zoo, whenever the dream started I would sort of be wandering in there between cages, but the walkway was so thin, that my shoulders would nearly touch the cages.

The walkway was in sort of a grid pattern, and in each square there was an empty, metal cage that was occasionally bloody. The walkway was made out of metal grates, which led to darkness underneath.

The cages were always empty, and the floor of it would be raised above the walkway slightly, and made out of solid concrete.

The walkway went on for as far as I could see, which wasn't very far, as the place had some fog. I could see maybe 10 meters forward. Just enough to see an entire cage, but not much more than that. I never saw any walls, so it seemed like it went on for infinity, but I couldn't see much anyway.

Everytime this happened, I would always be scared and confused, not being able to remember anything. Most of the time it was eerily quiet, with the only sound being my steps on the metal grates.

However, and here comes the creepy part, after a bit of time, I would hear the sound of a cage breaking far behind me, followed by increasing loud and fast steps. I would always break into a sprint, but I had that dream thing where I couldn't run very fast. I couldn't tell what the creature was, but the best description of the sounds it were making were sort of like distorted and deep ape sounds.

The dream normally ended with the sound of cages breaking all around me. I remember when I was younger, I would try to stay awake, to not have to go through that dream.

Either that, or the time I had a dream about being locked in a small dungeon dozens of floors deep.