We passed power station after power station around Leeds when we were on the A1 to Berlin. They are coal-fired and date from the era of intensive coal mining in the area. Now the coal is imported. They are also sited on major rivers to provide cooling water. The one pictured is on the River Trent. The picture shows evaporated water that has been used for cooling rising from a cooling tower. As it rises, it condenses in a cloud. Why the mushroom shape? It may well be that a horizontal wind was blowing at that altitude. It is unlikely, but not impossible, that there is a layer of warmer air above.
