Have you been to Black Rock Desert, Nevada? Its source convinces me of the authenticity of this photograph. The caption reads, “Minerals, algae, and cyanobacteria give this geyser in Nevada’s Black Rock Desert its brilliant colours.” It takes my breath away.

I’m reading Geoff Dyer’s latest compendium of essays, Otherwise Known as the Human Condition. Initially I was irritated that the book is a selection from two collections of Dyer’s essays that I already own: Anglo-English Attitudes and Working the Room. I guess that this edition is for the American market. My irritation was short-lived, Dyer is a brilliant essayist. The ‘Visuals’ section is best read with a screen to hand to seek out the photographers and places he mentions.