Valmiki Ramayana Ayodhya Kanda Sarga 119 Shloka 21

राघव Rama, एषः वने in the forest, फलानि fruits, आहरताम् of those gathering, महर्षीणाम् ascetics, एष पन्थाः this path, अनेन through this path, दुर्गम् impassable, वनम् the forest, गन्तुम् to go, ते to you, क्षमम् is safe.

O Rama, this is the one path in the forest used by the ascetics to gather fruits. You can safely cross the otherwise impassable forest through this path.