
1) Beginning 2) Geography terminology 3) Origin 4) Root 5) Rootage 6) Source 7) The beginning of a trail 8) Trail head
Found on
https://www.crosswordclues.com/clue/trailhead

entry point of off-road trail.
Found on
http://bikecult.com/bikecultbook/glossary_english.html

the starting point of a trail, usually marked with a sign.
Found on
http://camposaur.com/camping-glossary/

A trailhead is the point at which a trail begins, where the trail is often intended for hiking, biking, horseback riding, or off-road vehicles. Modern trailheads often contain rest rooms, maps, sign posts and distribution centers for informational brochures about the trail and its features, and parking areas for vehicles and trailers. Historically...
Found on
http://en.wikipedia.org/wiki/Trailhead

An access point to a trail or trail system often accompanied by various public facilities, such as a horse or OHV unloading dock or chute, parking areas, toilets, water, directional and informational signs, and a trail use register. Designed and managed for those embarking on an overnight or long-distance trip, whereas a staging area caters to trai...
Found on
http://www.americantrails.org/

the starting point of a trail, usually marked with a sign.
Found on
https://www.mnn.com/earth-matters/wilderness-resources/stories/beginners-gl
No exact match found.