|About the Site|
|Crater Lake National Park|
The East Rim
The east rim of the lake, at least as defined here, reaches from the area in the vicinity of The Palisades to Cloudcap and Redcloud Cliff. This section of the rim is shown below.
The rim is relatively low for much of this section, rising dramatically at Cloudcap, at the far right of the picture below.
The Palisades The most striking formation in this area of the rim is The Palisades. A perspective, from the south, is shown below.
A long distance view of the Palisades, from the other side of the lake, is pictured here. The Palisades are shown just to the left of the center of the picture.
The cliff called the Palisades was formed from a silicic lava flow.
Roundtop This hill is found just behind and above The Palisades, shown below. Rim Drive runs behind this small peak on its way around the rim.
A longer distance view of this geographic feature is shown below.
The Wineglass One noticeable landmark on rim of the crater is known as The Wineglass. This odd shape resembles the type of glass used with a martini as much as a wine glass. This formation can be seen in the photograph above as the light streak in the center of the picture. Seen below, closer in, the formation was originally created by a lava flow which has been partially exposed, as well as loose rocks.
The Wineglass is composed of glass particles which have been fused or welded together. The formation is called "The Wineglass Welded Tuff."
Grotto Cove Just south of The Wineglass is a large bay or inlet of the lake. This can be seen from across the lake below in the very center of the picture.
Skell Head Skell Head is seen below and to the left of Cloudcap in this panoramic view of the east rim. This location provides a turnout and a view of almost the entire lake and rim of the caldera.
Cloudcap Perhaps the most notable feature on the south rim, because of its height, is Cloudcap. This bluff, a massive dacite formation covered by pumice, rises nearly 2000 feet above the lake's surface, reaching an altitude of 7960 feet. It is the site of Rim Drive's highest overlook, which provides outstanding views of much of the lake and its rim.
Cloudcap is constructed of rhyodactite lava which filled the crater of an old explosion. It is thus similar to Llao Rock, but somewhat older.
Redcloud Cliff and Pumice Castle A notable landmark on the south rim is Redcloud Cliff, on the face of Cloudcap. The interesting formation known as Pumice Castle lies below the cliff. It can be seen in the center of the picture below.
The Pumice Castle formation is composed of buff, pink, and orange pumice. It was formed by an eruption which occurred some 70,000 years ago, and buried by the Redcloud Cliff flow. It was subsequently exposed when the caldera collapsed in the great eruption of Mt. Mazama. Rain, wind, and weather have finished the job of carving the formation into its fantastic shapes.
Pumice Castle has been know in the past as "Cottage Rock."
Sentinel Rock Sentinel Rock is a promontory just south of Cloudcap and the Pumice Castle.
This promontory was used, in 1886, along with The Watchman, to position the boat The Cleetwood being used by the United States Geological Survey to map the lake.
The combination of Cloudcap, Sentinel Rock and Mt. Scott make this section of the rim one of the most topographically interesting on the lake.
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