The witches... yes it gets popular on Halloween.

The hill is also famous for its links to three events which took place in the 17th century: the Pendle witch trials (1612), Richard Towneley's barometer experiment (1661), and the vision of George Fox (1652), which led to the foundation of the Religious Society of Friends (Quaker) movement.

More here... https://en.wikipedia.org/wiki/Pendle_Hill

Long before I was about... :)