The sand is fine volcanic ash from the eruption of Mount Mazama 6,600 years ago.

The volcanic crater was formed by the collapse of the volcano, Mount Mazama, about 7,500 years ago.

Mount Mazama is part of the Cascade Range island arc.

That led to the lowering of Mount Mazama around 5700 BC.

Mount Mazama was destroyed in the battle.

It is located in the caldera of Mount Mazama.

Mount Mazama was destroyed in the battle, creating Crater Lake.

Local Native Americans witnessed the collapse of Mount Mazama and kept the event alive in their legends.

The 75 shoes had been preserved under layers of pumice and ash from an old eruption at Mount Mazama.

Llao was the spirit of the underworld who lived beneath Mount Mazama.