gatva mahismatim ramo
tesam sa sirsabhi rajan
madhye cakre maha-girim
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O King, Lord Parasurama then went to Mahismati, which was already doomed by the sinful killing of a brahmana. In the midst of that city he made a mountain of heads, severed from the bodies of the sons of Kartaviryarjuna.