Valmiki Ramayana Yuddha Kanda Sarga 67 Shloka 34
Original Shlokaस वानरसहस्त्रैरजितः पर्वतोपमैः । रराजराक्षसव्याघ्रोगिरिरात्मरुहैरिव ।।6.67.34।।
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वानरसहस्त्रैरजित covered by thousands of monkeys, पर्वतोपमः resembling mountain, सः he, राक्षसव्याघ्रः tiger among Rakshasas, आत्मरुहैः grown on itself, गिरिःइव like mountain, रराज appeared.
The tiger among Rakshasas covered with thousands of Rakshasas was resembling a mountain with trees grown on itself.