An educational trail, nature trail or nature walk is a specially developed hiking trail or footpath that runs through the countryside, along which there are marked stations or stops next to points of natural, technological or cultural interest. Wikipedia

A groomed hiking or trail, provides visitors with knowledge Wikidata

A guided trail, designed to explain to children a piece of countryside, the type of soil, flora, fauna, etc. Such trails may be self-guiding, using either explanatory notices set up at intervals or numbered boards referring to a printed leaflet: in other cases parties may be led by a demonstrator or warden. OmegaWiki