Reference request: Skulls higher than the Himalayan mountains

I’m looking for a sutta wherein the Buddha talks about the aimless wandering in Samsara and gives several analogies, one of them being about taking all the skulls one has left behind and piled them on top of each other and the pile would become taller than the Himalayan mountains. I can for the life of me not find that anywhere. I know I read a while ago but now it can’t find it anywhere. Does anyone know about this sutta?