Valmiki Ramayana Aranya Kanda Sarga 60 Shloka 11

रामः Rama, वृक्षात् from tree, वृक्षम् to another tree, गिरेः mountain, अद्रिम् to another mountain, नदात् from one river, नदीम् to another river, प्रधावन् while running, विलपन् while weeping, शोकार्णवपरिप्लुतः immersed in a sea of sorrow, बभूव remained.

Running from tree to tree, hill to hill, and river to river and weeping, Rama was immersed in a sea of sorrow.