Jerry Monkman / An unmistakable white blaze marks the Appalachian Trail along this stretch of the Ethan Pond trail in the White Mountains, New Hampshire, USA.

Jerry Monkman / The first trail blaze and southern terminus sign of the Appalachian Trail on Springer Mountain, Chattahoochee NF, Georgia, USA

Jerry Monkman / The first trail blaze and southern terminus sign of the Appalachian Trail on Springer Mountain, Chattahoochee NF, Georgia, USA

Jane Burton / Chestnut colt foal (11-weeks) with white blaze, beginning to lose its baby coat, nuzzling mare, UK

Jane Burton / Chestnut British show pony colt foal (11-weeks) with white blaze, scratching tail, UK

Jane Burton / Chestnut horse with white blaze, head portrait

Jane Burton / Chestnut horse with white blaze, head portrait

Mike Read / New Forest Pony, mare with question mark shaped white blaze, New Forest National Park, Hampshire, UK, November