As two actions, you can create a vial of liquid with a forked branch suspended in it. A creature can drink the contents as an action to find the shortest, most direct physical route to a specific fixed location that it is familiar with on the same plane of existence. If the destination is on another plane of existence, if the destination moves (such as a mobile fortress), or if the destination isn’t specific (such as “a green dragon’s lair”), the effect fails.
For the duration, as long as the creature is on the same plane of existence as the destination, it knows how far it is and in what direction it lies. While the creature are traveling there, whenever it is presented with a choice of paths along the way, it automatically determines which path is the shortest and most direct route (but not necessarily the safest route) to the destination.