UFO sightings

In the mid eighties a  large crowd were fishing in the park in Camberwell. It was a hot sunny day suddenly a dark shiny cloud could be seen hovering over the lake. Everyone was looking up at it .it lowered getting larger and larger until it blocked out the sky. The next thing I remember is that my partner myself and our dog were in a dark street two miles away with no idea how we got there. I tried to talk to him but he was afraid I was really scared but I didn't know why. My head hurt every time I tried to talk about it. We're you there? Do you remember.