Came to reality. Sounds familiar to me...
I'd say you're experiencing your own shadow self. Nothing to be scared of, an openmind and lack of fear might be of great benefit sometimes since this world and its societies can twist you up good inside into what looks like scary things, and which may even be scary things, but ultimately not dangerous or ominous things.
Meditation can allow your higher self to give you some interesting experiences that'll hopefully (maybe usually) lead to a desired future. Sometimes they're wonky, or weird, sometimes crude or inappropriate. Some people here call bad experiences greetings, I think its all the same in a positive sense. Bad is positive inversed basically. Its ultimately happened and thus meant to.
Try asking the Universe and your Guides and maybe the Ascended Masters to protect you in meditation, and try to seek a facet of yourself related to your meditation desires at some point to start looking into A) Who you are Yourself truly, B) and to get an idea of where to start looking into why you're here. C) Also because trying to communicate with your higher self is naturally safe and protected by your own being, plus many others both Guide, Ascended Masters and maybe more.
Or you could say Angels, I think they're all related or answer similar calls.
Just don't freak out, you're safe and sound inside your own mind's silence. No need to worry!
All of those things are our societal standards of what is what, when we limit ourselves to fit those standards we automatically push down aspects of ourselves where they begin to cause distortion in ourselves causing distortion externally of us. Sometimes in our health which leads to further catalyst.
Do not fear your darkness, you and it are the same being. Just realize when you look into it, it is also looking into you. If you meditate to darkness in mind (not the same as just emptying the mind) sometimes your shadow self will just intuit to you valuable explanations as to why you are who you are today. She's probably a 'bad' person, but when you love yourself, she'll love you, especially if you accept her.
My shadow self is a similar sort of experience without the actual experiences, but a similar series of mental thoughts in a meditation of my shadow self brought similar sights to mind. Past away loved ones, overlooking self (I saw myself looking through me), a sort of silent then apparent fear or horror. Then anxiety and doubt and uncertainty. Sometimes our minds can magnify the experience if we allow it to become very personal or emotional. That's what being openminded and remembering you're safe is beneficial to figuring out these experiences.
The first time I ever had an external occurrence in a meditation was when I was 16 and was laying down meditating midday for 2 hours. I heard a vibrating resonant female voice say 'No Repair' clearly in my mind and to this day I have no idea what that means in any context to anything.
Meditation can be mysterious.