Valmiki Ramayana Kishkindha Kanda Sarga 40 Shloka 40

तत्र there, शैलशृङ्गेषु on the mountain cliffs, शैलनिभा: huge as mountain, भीमाः frightening, नानारूपाः of different forms, भयावहाः fearsome, मन्देहाः नाम called Mandehas, राक्षसाः demons, लम्बन्ते will be hanging down.

'There are frightening demons called Mandehas of different forms, fearsome as huge mountains hanging down the mountain peaks.