The Galapagos Post Office where from the 18th century sailors left letters for homebound crews to take for delivery, Floreana Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Bird on marker post, The Beach, Eastbourne, East Sussex, England, United Kingdom, Europe

Coastal scenery on the South West Coast Path, East of Port Isaac, Cornwall, UK.

Coastal scenery on the South West Coast Path, East of Port Isaac, Cornwall, UK, with a path marker.

Signpost, antarctica. King george island. Russian research centre

Lava lizard (Microlophus spp) on a trail marker in the Galapagos Island Archipeligo, Ecuador. MORE INFO: Many of the islands within the Galapagos Island Archipeligo have their own endemic species.

Connated marker on a hiking trail

Cyclist being overtaken on a snowy country road in winter, Hesse, Germany, Europe

Snow-covered road in winter with traffic, Hesse, Germany, Europe

Snow-covered road in winter with traffic, Hesse, Germany, Europe

Snow-covered road in winter with traffic, Hesse, Germany, Europe

Snow-covered road in winter with traffic, Hesse, Germany, Europe

Lonely country road during sunrise in the snowy mountains of Iceland. europe, northern europe, iceland, February

Lonely country road during sunrise in the snowy mountains of Iceland. europe, northern europe, iceland, February

Lonely country road during sunrise in the snowy mountains of Iceland. europe, northern europe, iceland, February

The new post & rail border fence runs next to the original border markers, Arizona.

The new post & rail border fence runs next to the original border markers, Arizona.

Icon, information sign post at Cedars Mill Trail in Lynn Valley Canyon, North Vancouver, British Columbia, Canada