Old pharte story- a long time ago, around 1985, I was hiking down the Alatna river from the upper reaches near the divide, to the Koyukuk. Nice walk.-mid 70's, bright blue skies. Anyway, there was a bright white patch on the ground and on investigation, I found a very cool little tableau - Two caribou skulls , with intertwined racks- apparently they had gotten stuck fighting and ended up in death together.