Cavern at Rocks National Lakeshore, Michigan, USA

A pictisque view from a cavern at Pictured Rocks National Lakeshore in Michigan’s Upper Peninsula. The area’s named after its colourful sandstone cliffs, which stretch for 15 miles along the shores of the largest of the Great Lakes, Lake Superior.

As groundwater leaches out of the rocks, it carries minerals such as iron, manganese and copper that paint the cliffs in shades of red, pink, black, green and other colours.

The park itself, which is roughly the size of five Manhattan Islands, boasts waterfalls, beaches and rock formations – some resembling human profiles and castle turrets – carved over time by relentless waves and the unforgiving weather of Yooper Country.