Someone who can find paths through unexplored territory WordNet 3.0 & Open English WordNet

A guide is a person who leads travelers, sportspeople, or tourists through unknown or unfamiliar locations. Wikipedia

In military organizations, a pathfinder is a specialized soldier inserted or dropped into place in order to set up and operate drop zones, pickup zones, and helicopter landing sites for airborne operations, air resupply operations, or other air operations in support of the ground unit commander. Wikipedia

Person with specialized knowledge that helps laypersons travel through an area. Wikipedia Disambiguation

A person with specialized knowledge of an area who leads or conducts others Wikipedia Disambiguation

A person who leads travelers or tourists through unknown or unfamiliar locations Wikipedia Disambiguation

A type of soldier Wikipedia Disambiguation

Person who escorts travelers or tourists through unknown or unfamiliar locations Wikidata

Someone who guides, especially someone hired to show people around a place or an institution and offer information and explanation. Wiktionary

Someone who guides. Wiktionary (translation)

One who discovers a way or path; one who explores untraversed regions. Wiktionary

One who discovers a way or path. Wiktionary (translation)