The group of them walked down a lane, past rows and rows of what Draco assumed were caravans – they looked like boxes with wheels, for people to live in. He could hear the sound of voices and music coming from some of them, and outside one, a group of people sat in folding chairs, drinking and smoking, and talking animatedly. He followed Johns off the road a little way, Hermione invisible but warm beside him, the faintest blurs of the others visible warping the air between him and Johns. They ended up a short distance from the caravan park, down by a line of trees that edged the River Dee.