Mount Mazama was a giant volcano located in the Cascades. Around 7700 years ago the volcano erupted so violently that the top mile of the mountain exploded and the remaining cone collapsed. The vast caldera became a deep empty hole—which soon filled up with water and became a beautiful lake—Crater Lake in Oregon.
Crater Lake is indeed very lovely, but it is also disquieting. There are no rivers or streams which empty into it (after all it is located atop what remains of a vast mountain) but the snowfall in the region is so high that the lake easily fills up with extremely clear melt water. The clear water combines with the lake’s great depth to absorb all hues of light other than indigo—so the lake is dark blue. The deepest point is 1,943 feet (592 m) below the surface, which makes it the deepest lake in the United States and the seventh deepest lake (by average) in the world—deeper even than the otherworldly depths of Lake Baikal. Originally the lake had no fish (although they were added by humans in the twentieth century). Its waters are extremely cold and items which fall into it decay slowly.
The Klamath people, a Native American tribe who have long lived in the region, have a sacred myth which tells about the formation of the lake. Long ago, there were two great spirits, Skell, spirit of the sky, and Llao, the spirit of the underworld. Llao lived beneath Mount Mazama and sometimes he would leave the underworld and venture to the top of the mountain, where he could almost reach Skell’s dwelling. One day, as he was watching the world from the mountain top, Llao saw the beautiful daughter of the chief of the Klamath people. He eagerly paid suit to the lovely maiden, but he was hideous and she spurned his advances.
In anger Llao began to hurl fire and stones onto the Klamath people, and they begged their greatest benefactor, Skell to help them. Skell came down to the very lowest point of his kingdom–the top of Mount Shasta–and began to battle Llao, who stood at the highest point of his realm—the top of Mount Mazama. Soon the spirit battle became more tumultuous as other spirits of the sky, the land, and the underworld joined in. The two greatest medicine men of the Klamath saw that the war of so many spirits was destroying the world so they hurled themselves down into the volcano’s caldera as a sacrifice to appease the angry spirits. The lesser spirits of the underworld were indeed appeased and ceased their fighting, but Llao’s wrath at his rejection was not sated. He continued to battle Skell but he was overwhelmed and defeated. Skell hurled vast magic at Llao and the entire mountain exploded.
Llao fled down into the huge hole which was created. Some say he died there from Skell’s magic, whereas other’s believe he lurks somewhere in the underworld (with Gong Gong maybe?) waiting for the right moment to make his return. Whatever the case, Skel disliked the site of the vast pit in the world and he made sure to fill it with water and keep it filled. Looking at aerial pictures of Crater Lake, it is hard not to respect the narrative wisdom of the Klamath story tellers. Few things on Earth look more like an entrance to the underworld, and even the most literal volcanologist would have to concede that volcanic calderas are a place where the world below comes most directly to Earth’s surface.