I was driving west along a state highway in northern California. Just kind of staying alert enough to keep the car aimed in the right direction. The scenery was nice and green and hilly but nothing spectacular.
All of a sudden my wife said, "Now that's strange!"
I glanced over at her and saw that she was looking intently out the window at something.
"Hey," she said. "Can you pull the car over and stop on the shoulder?"
I pulled over and asked, "What's up?"
"The water in that creek. It's flowing in the wrong direction."
Sure enough the creek, which had been flowing in the same direction as we were traveling, was now flowing in the opposite direction. We got out for a closer look. There was a strangeness in the air. Total quiet prevailed. Even the energetic little creek was making no sound. No birds flying around and no traffic on the road. It was as if we were on the edge of a different world. I noticed the hair was standing up on the back of my neck and we determined it would be prudent to return to the car and drive on. Within a very short distance we observed that the water was again flowing in the right direction and things seemed normal.
Were we at a place where there was a dimensional overlap? I don't really know. I've come across a number of strange places in the hills and mountains of the west. Places where the air shimmered and there was the feeling of an unseen presence nearby. Some people call them portals. I think of them as doorways or entrances to other realms. Some of them I've been invited to enter and have done so. Others have had an alien feeling and I have shied away from them.