Crumbles mountain

With the object that Bhima might not come by curse or defeat, by entering into the plantain wood, the ape Hanuman of huge body
lay down amidst the plantain trees, being overcome with drowsiness. And he began to yawn, lashing his
long tail, raised like unto the pole consecrated to Indra, and sounding like thunder. And on all sides
round, the mountains by the mouths of caves emitted those sounds in echo, like a cow lowing. And as it
was being shaken by the reports produced by the lashing of the tail, the mountain with its summits
tottering, began to crumble all around. And overcoming that roaring of mad elephants, the sounds of his
tail spread over the varied slopes of the mountain.

Vana Parva: Section 145