Little Tahoma Peak. A towering and rugged peak on the east flank of Mount Rainier. Very few adventuresome climbers have as yet attained its summit. Elevation, 11,117 feet above sea level. The only ascent known was made by Prof. J. B. Flett and H. H. Garretson.
Lodi Creek. A tributary of White River, in the north-central portion of the Park. The name is said to have been given by early prospectors for minerals.
Longmire Springs. Near the southeastern boundary of the Park. The springs were discovered by the pioneer, James Longmire, who acquired title to the property and lived there until his death on September 17, 1897. Members of his family still maintain a resort there. The National Park Inn, a postoffice, Park offices, and other conveniences make Longmire the capital of the Park. Elevation, 2,761 feet above sea level.
Lost Creek. Flows across the northeastern boundary of the Park.
Louise Lake. In the south-central portion of the Park between Mazama Ridge and Tatoosh Range. Origin of name not ascertained.
McClure Rock. On the southeastern slope near Paradise Glacier. It marks the place of the tragic death of Professor Edgar McClure, of the University of Oregon, in 1897, while descending after taking barometric measurements at the summit. Elevation, 7,384 feet above sea level.
McNealey Peak. A part of Sourdough Mountains in the northern part of the Park. Origin of name not ascertained.
Madcap Falls. On the southern slope of the mountain, in the Paradise River between Narada Falls and Carter Falls.
Maple Falls. In a creek of the same name, near the southern boundary of the Park. The creek is a tributary of Stevens Creek.
Marcus Peak. A part of Sourdough Mountains in the northeastern part of the Park. Origin of name not ascertained.