Mound zero: what is Marble Arch’s new landmark all about?

Dreamed up to drag shoppers back to Oxford Street, the £2m artificial hill is already suffering in the heat. Will it provide Instagram moments – or a discussion about global heating? Build a hill and they will come. This, at least, is what Westminster council is betting on, having lavished £2m on a temporary mound. Rearing up at the western end of Oxford Street as a faceted green shell, looking like a landscape from a low-fi video game, the 25-metre high Marble Arch Mound is on