Valmiki Ramayana Aranya Kanda Sarga 26 Shloka 34
Original Shlokaक्षणेन तु महाघोरं वनं निहतराक्षसम्। बभूव निरयप्रख्यं मांसशोणितकर्दमम्।।3.26.34।।
1 source checked for this shloka
निहतराक्षसम् with demons killed, वनम् the forest, क्षणेन तु in a moment, महाघोरम् very dreadful, मांसशोणितकर्दमम् soil soaked with the mud of flesh and blood, निरयप्रख्य like a hell, बभूव appeared.
With the slaughtered bodies of demons lying on the ground, the forest in a moment looked very dreadful like hell with the mud of soil soaked with flesh and blood.