JES BURNS:

There were no fish or other predators in the newly-formed lake. And the Mazama newt expanded and thrived. It was the undisputed top of the food chain.

But not anymore. Because crawling beneath the surface of the lake… A new champion has emerged. The signal crayfish.

Their story begins more than 100 years ago. Back when getting to Crater Lake from Medford took five days by horse and wagon.

To attract visitors early conservationists began stocking the lake with game fish like trout and salmon.

Craig Ackerman is Park Superintendent.