Norcombe Hill—not far from lonely Toller-Down—was one of the spots which suggest to a passer-by that he is in the presence of a shape approaching the indestructible as nearly as any to be found on earth.
There are no more uses of "indestructible" in the book.
Show samples from other sources
When the fear takes over, use the only thing more powerful, more indestructible, to fight it: your spirit.
Sabaa Tahir -- An Ember in the Ashes
"Nick, don’t let one good turn make you feel indestructible," Go said.