Having said that, Hanuman is knowledgeable of Ravana's ruse by a crocodile, and kills Kalnaimi. When Hanuman is unable to locate the Sanjivani right before Dusk, he again shows his might by lifting the complete Dronagiri mountain and bringing it on the battlefield in Lanka, to ensure Some others https://www.youtube.com/watch?v=6cAOQp6Twlc