This great clifflike formation, rising to an elevation of 9,178 feet, is to the north of Crater Lake and outside of the park. It is a picturesque sight when seen from the heights surrounding the lake and is often referred to as the Matterhorn of the Cascade Range. It is the wreck remaining of a great mountain. The sharp summit of the peak has been shattered repeatedly by lightning, producing fused glassy surfaces and tortuous opening of the nature of fulgurite formations. To reach its sharp heights is difficult and requires experience in mountain climbing. Near the foot of Thielsen lies Diamond Lake. LLAO’S HALLWAY The Hallway, a gorge 125 feet deep cut through pumice material by stream erosion, is located on a tributary to Castle Creek just north of the White Horse campground on the Medford Road. There are numerous cave amphitheaters and narrow passageways along the trail which follows the bottom of the gorge. CASTLE CREST WILD FLOWER GARDEN Ideal for the study and viewing of Crater Lake flora, this garden is near Park Headquarters, 3 miles from the rim area. A half-mile trail winds through this area, alive with blooms throughout the summer season. WILD ANIMALS The park abounds with the smaller game species that are of great interest to the visitor because of their friendly inquisitiveness. Members of the squirrel family have learned that they will not be harmed and so are numerous along roads and trails and at any place where people congregate, knowing that in such surroundings they will find a wealth of tidbits. With the possible exception of the bear, the larger mammals are fairly well represented but not numerous. Of the three deer species, the Columbia blacktail is most common. Also reported is the larger Rocky Mountain mule deer, and infrequently a band of whitetail deer may be discovered in one of the grassy, watered meadows. Elk have been noted along the eastern side of the park as far north as the base of Mount Scott. The visitor who sees them, however, is fortunate, as elk are rare in the park. [Illustration: _Copyright, Kiser_ BRUIN CLIMBS A TREE] Bears, while they may be seen by the keen observer in many parts of the park, are most numerous around Park Headquarters and may be seen at almost any hour of the day foraging in the garbage pit nearby. Excepting a few brown individuals, they are the well-known black variety. Sometimes as many as three cubs, attended by their mother, make their appearance. Visitors never tire of watching the antics of these little balls of fur as they frolic and play. An occasional disciplinary cuff administered by a watchful mother always causes much merriment among the spectators.