How open offline maps in google Maps?
I have a somewhat silly question with offline maps in Google Maps. I can download them OK, and I get a list of the offline maps stored on my iPhone, and if I tap the name of a map then I get a small picture of the map in the upper part of the screen. But I cannot open it! If I tap it then nothing happens. There is no button or menu item to open it. Should I sweep the picture of the map in some way? Grateful for help!
iPhone 6, iOS 11.4