Valmiki Ramayana Sundara Kanda Sarga 46 Shloka 35

कपिकुञ्जरः a mighty elephant among the monkeys, वीरः courageous, हनुमान् Hanuman, समृगव्यालपादपम् along with animals serpents and trees, गिरेः शृङ्गम् mountain peak, समुत्पाट्य having uprooted, राक्षसौ both the giants,जघान killed.

Hanuman, a courageous and mighty elephant among the monkeys uprooted a mountain peak along with its animals, serpents and trees and killed both the demon generals.