Madinah National Park

Madinah National Park in Medina is a tame, fenced stretch of trails, shade structures and a children's train — but the guide's real subject is the basalt desert just beyond its fences, where local drivers still cut their engines to watch cars roll forward on their own. You'll hear the jinn explanation locals give, the voice some claim to have heard warning them off after dark, and the scientific theory offered against it. It traces a habit of driving out from Medina at day's end that goes back generations, long before anyone argued about why the cars move.