signs In addition to reassuring the trail user that they are on the trail, the signage can alert them to imminent turns, particularly if there is some confusion about what might be the trail, and where trails begin and end. Offset blazes is a system whereby a vertically stacked pair of blazes with the upper one offset in the direction that the trail turns. This system was first used in 1970 on the Beech Trail in Harriman State Park. This system was further refined to where a triangular pattern of blazes would indicate a terminus, its point up or down depending on whether that was the beginning or the end. These began to be used elsewhere and are now fairly common throughout North America, though variations of this system exist. Some trails instead use two blazes painted together at an angle to form an "L" shape to indicate a turn, with the angle between the two blazes indicating the angle and direction of the turn. Also, a few trails indicate turns with two stacked blazes, without an offset, but this can cause confusion as the direction is not implied. In addition, other trails may use two non-offset stacked blazes to indicate the trail goes straight at a location where there may be a tempting mis-turn. A triangular pattern with its point to the side was also devised for eventualities like spurs or junctions, but these have not caught on. In some areas, a triangular pattern with its point up indicates that a hiker is at the point of a sharp switchback. In the Netherlands, signage usually consist of two bars above each other: white-red, yellow-red and red-blue are commonly seen blazes. An upcoming turn is indicated by duplicating the blazes: white-red-white-red, yellow-red-yellow-red, etc. Nowadays, stickers are often used, and instead of duplicating the blaze, the rectangle is cut into an arrow, to indicate direction. A diagonal cross is used to indicate a direction should not be taken: the cross will have the same colours as the blazes (each bar will use a different colour). See also Daymark Desire path, a trail created by repeated use, sometimes informally marked Land mark Quilt Trail Sea mark Trailhead Wayfinding Waypoint, a GPS navigation term References Hiking Outdoor recreation Signage Trails Geopositioning markers