Steps up Mam Tor, view towards Rushup Edge, distant fields and hills in winter, Castleton, Peak District, Derbyshire, England, United Kingdom, Europe

Mam Tor (Shivering Mountain), exposed east face strata lit by rising sun in winter, Castleton, Peak District, Derbyshire, England, United Kingdom, Europe

Men swimming in the icy glacial lakes of Mount Cook National Park; Canterbury, New Zealand

Men swimming in the icy glacial lakes of Mount Cook National Park; Canterbury, New Zealand