A line of Scots pine trees marking a field boundary in the countryside, Shottisham, Suffolk, England, United Kingdom, Europe

West side of the 30m pyramidal monument marking the equator, first identified in this district by Charles Marie de la Condamine in 1736, La Mitad del Mundo, San Antonio, Pichincha Province, Ecuador, South America

Sign along the path to the Long Logs Trail, marking the Jim Camp Wash along the main road of Petrified Forest National Park, Arizona, United States of America, North America

Copenhagen, Denmark ��� View of Frue Plads��� entrance to Copenhagen University, framed by bronze busts of scholars, marking the historic core of Denmark���s academic elite since 1479.

Signpost marking the way to Combe Martin. South West coast Path near Combe Martin in Devon, England, United Kingdom, Europe

Walkers next to waymarker, South West Coast Path, signpost to Porthcurno, Treen, St Levan, Cornwall, England, United Kingdom, Europe

Traffic sign, blue and red, marking path for cyclists and pedestrians, National Cycle Route 3, long-distance cycle route, Cornwall, Great Britain

Hiking woman, National Park Hohe Tauern, Tyrol, Austria

Climbers ascending Mt. Marmolada, Dolomites, Westgrat fixed rope route, Mt. Marmolada in the back, Trentino, Italy, Europe

Mountain panorama from the Koblat-Höhenweg on the Nebelhorn, behind left the Hochvogel, 2592m, in the centre the Schneck, 2268m, and on the right the Höfats, 2258m, Allgäu Alps, Allgäu, Bavaria, Germany

Trail in front of the peak of the Grossglockner, National Park Hohe Tauern, Tyrol, Austria

Sign, "Ruheforst" marking a woodland burial site, alternative cemetery, Palatinate region, Rhineland-Palatinate, Germany, Europe

Cairns on the hiking trail, Glacier du Tour, glacier and mountain peaks, high alpine landscape, left Aiguille du Chardonnet, Chamonix, Haute-Savoie, France, Europe

Three-Free-States-Stone, border stone, Green Belt, Kolonnenweg, border path, inner-German border installation, hiking trail, Bavaria, Saxony, Thuringia, Germany, Europe

Red marked bicycle path on the roadway, Krakow, Poland, Europe

Three Free States Stone, border stone, hiker with backpack sitting on bench, Green Belt, Kolonnenweg, border path, inner German border, hiking trail, Bavaria, Saxony, Thuringia, Germany, Europe

Red cycle path marking on wet pavement, Ribeira Grande, Sao Miguel Island, Azores, Portugal, Europe

Sign, Marking for a hiking trail, Stay on path, Stay on path, Iceland, Europe

Road in Himalayas marked with stone cairns. Ladakh, India, Asia

A sign marks the Manistee River Trail, Wellston, Michigan, USA

Hiking marker, hiking trail in the forest, near Scharnitz, Bavaria, Germany, Europe

Bicycle pictogram on a bicycle track

Walking trail on the Isla del Sol, Island of the Sun, in Lake Titicaca, Copacabana, Bolivia, South America

Bicycle crossing with sign, Walcheren, Zeeland, Netherlands, Europe

Bicycle crossing with sign, Walcheren, Zeeland, Netherlands, Europe

Red bike path with markings, Bavaria, Germany, Europe

White asphalt bike lane with directional sign

Woman hiking behind marking on tree trunk