About the Site
Crater Lake National Park  


Park History

The Lake

The Boat

Wizard Island

The Phantom Ship

North Rim

East Rim

South Rim

West Rim

Llao Rock

Sun Notch

Mt. Scott

Park Mountains

Mt. Thielsen

Peripheral Views

Pumice Desert

The Pinnacles

Godfrey Glen

Crater Lake Lodge

Visitor Facilities


Rim Drive



Birds & Animals

Evening & Sunset


Llao Rock

The largest and most obvious feature on the north rim of the caldera is probably Llao Rock. This feature represents a 1200 foot thick flow of rhydocite lava. The flow preceded the catastrophic eruption and collapse of Mt. Mazama by 200 years. In the great collapse which created the caldera a substantial portion of Llao Rock fell into the void. Llao Rock is shown below in the center of the picture.

Llao Rock is one of the highest points on the rim of the lake, reaching an altitude of 8046 feet. One author has compared its appearance to that of a manta ray.

Llao Rock was named by William Gladstone Steel. Llao was the chief of the "below world", who lived beneath Mt. Mazama. Llao fought Skell, the chief of the "above world" in Indian legend. Skell, who lived on top of Mt. Shasta, defeated Llao in a great battle.

The v-shaped bottom portion of the formation begun as an explosion crater which was filled by lava flowing from the eruption. The rock itself is formed from the lava of a single flow. The face of Llao Rock is an impressive 1200 feet high. It is fully one half the height of the caldera wall there.

The following picture provide different perspectives of Llao Rock. First, the east face of the rock is seen from the Steel Bay Overlook.

Another view from the east is show here.

This view shows the western face of Llao Rock from Merriam Point.

Llao Rock can also be seen from behind the rim, as is shown below, from a position along Rim Drive.

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  • All photographs ©Patrick Holleran, Shannon Digital Imaging, 1994-2013

  • Commercial use of the images contained in this document without express written consent is strictly prohibited.

  • Comments and other remarks can be sent via e-mail to parkvision@shannontech.com