These people were wide awake.
I think there is something, I'd call it a phenonemon.
I'm not claiming it's anything other than that.
There was a popular BBC ghost story from the 70's , called The Stone Tape.
It was about a TV crew investigating a haunting with the premis that ghost sightings were not at all supernatueal. That certain highly emotional events, battles, killings, executions etc. would imprint some kind of memory in the landscape itself.
It was like a recording of the events in the stones, hence the name stone tape.
Certain conditions could trigger the 'tape' and cause a replay, which was seen as a haunting.
The story hinged on this being something that could be explained scientifically, once the magnetism, radio and wotnot was sorted out. It wasn't supernatural, science just hadn't caught up to it yet, but it would.
I try to keep an open mind, I don't like to to dismiss anything out of hand.