Spencers Cairn Traditional Cache

Cairn is a term used for a man-made pile (or stack) of stones. It comes from the Scottish Gaelic.Cairns are found all over the world in uplands on moorland, on mountaintops, near waterways and on sea cliffs, and also in barren desert and tundra areas. They vary in size from small stone markers to entire artificial hills, and in complexity from loose, conical rock piles to delicately balanced sculptures and elaborate feats of megalithic engineering. Cairns may be painted or otherwise decorated, e.g. for increased visibility or for religious reasons.

In modern times, cairns are often erected as landmarks, a use they have had since ancient times. Since prehistory, they have also been built as sepulchral monuments, or used for defensive, hunting, ceremonial, astronomical and other purposes.
Today, cairns are built for many purposes. The most common use in North America and Northern Europe is to mark mountain bike and hiking trails and other cross-country trail blazing, especially in mountain regions at or above the tree line. For example, the extensive trail network maintained by the DNT, the Norwegian Trekking Association, extensively uses cairns in conjunction with T-painted rock faces to mark trails. Other examples of these can be seen in the lava fields of Volcanoes National Park in Hawaiʻi to mark several hikes.Placed at regular intervals, a series of cairns can be used to indicate a path across stony or barren terrain, even across glaciers. Such cairns are often placed at junctions or in places where the trail direction is not obvious, and may also be used to indicate an obscured danger, such as a sudden drop, or a noteworthy point such as the summit of a mountain. Most trail cairns are small, a foot or less in height, but may be built taller so as to protrude through a layer of snow. Hikers passing by often add a stone, as a small bit of maintenance to counteract the erosive effects of severe weather. North American trail marks are sometimes called "ducks" or "duckies", because they sometimes have a "beak" pointing in the direction of the route. The expression "two rocks do not make a duck" reminds hikers that just one rock resting upon another could be the result of accident or nature rather than intentional trail marking.

As is the tradition of cairns please place a new stone there to aid others find the way.