I have vague memories of a TV show that I think was back in the 70's/80's but I cannot recall it's name, though I loved it at the time!
I think the first episode started with a family sailing holiday, when their yacht entered a strange fog bank. After that they were possibly teleported to another world?
My only other memory is an episode that revolved around sacrifices into a fire pit!
Sorry I don't know. The only other memory I have is that at the end of each episode I think they walked into a yellow light that was supposed to telport them back home, but obviously took them somewhere else instead.