What is this?

I know what this picture is because I took it, but in my family we are having some issues. My parents think it is some kind of rock thing and they have convinced my siblings of that too. I really don't think it is that hard to see what it is, but maybe it's just because I took it. So, I decided to post the picture and see if anyone can figure out what it is. Please leave a comment on what you think this picture is. Thanks!