60 Fun Facts About Mount Rainier National Park

Mount Rainier is the highest peak of which mountain range?

Cascades. The range's great peaks are volcanoes, built where an ocean plate plunges beneath North America, the same engine that blew apart nearby Mount St. Helens in 1980.

By what other name, from Indigenous languages, is Mount Rainier widely known?

Tahoma. A sister form, Tacoma, was once used interchangeably with Rainier, and people in the nearby city of that name pressed for decades to have the peak renamed.

Mount Rainier National Park lies in which U.S. state?

Washington. Rainier is the state's highest peak and one of its great hazards: mudflows from the volcano have reached the Puget Sound lowlands and could threaten the valleys below again.

Which national park is older than Mount Rainier, the nation's fifth?

Yosemite. Only it, Yellowstone, Sequoia and General Grant came first; scientists joined the campaign for Rainier's park because they wanted its glaciers preserved for study.

Which president signed the 1899 act that created Mount Rainier National Park?

William McKinley. He signed it on March 2, 1899; Theodore Roosevelt, the president most linked with the parks, only took office after McKinley was shot in 1901.

Mount Rainier is what kind of volcano?

Stratovolcano: Rainier's steep cone is stacked from andesite lava flows and loose debris, and hot volcanic gases have rotted parts of it into weak clay, which is why its flanks can give way as huge mudflows.

Why has Mount Rainier's summit dropped about 10 feet since the 1990s?

Its ice cap melted: a 2025 study found about 20 feet of ice gone from Columbia Crest, the ice dome surveyed at 14,410 feet in 1956, so a bare rock point on the crater rim is now the highest spot.

Which marmot species whistles its alarm call from Mount Rainier's subalpine meadows?

Hoary marmot: its piercing alarm call earned it the nickname 'whistler', and British Columbia's London Mountain was renamed Whistler after the animal before it opened as a ski resort.

Which explorer named Mount Rainier after his friend, Rear Admiral Peter Rainier?

George Vancouver named the peak in May 1792 while charting Puget Sound, yet the admiral never saw the mountain that carries his name, and he had fought against the Americans in their War of Independence.

In 1833 Hudson's Bay Company doctor William Tolmie entered today's Mount Rainier National Park seeking what?

Medicinal plants: the trip made Tolmie the first European known to explore the area, and a saxifrage he collected there and Tolmie Peak both still carry his name.

The 1930s log visitor buildings at Yakima Park, on Mount Rainier's northeast side, were built to resemble what?

A frontier fort: planners gave the ridge-top complex log blockhouses and a stockade, but the big hotel meant to anchor it was never finished and survives only as a day lodge.

Which glacier on Mount Rainier's north side holds the most ice?

Carbon Glacier is unusually thick, about 700 feet at its deepest, which is why it holds the most ice; it also reaches lower than any other glacier in the contiguous United States, to about 3,500 feet.

Which Rainier glacier is the largest by surface area in the contiguous United States?

Emmons Glacier covers about 4.3 square miles of the northeast flank, and a 1963 rockfall that buried its lower end in debris shielded the ice from melting so well that the glacier surged forward in the early 1980s.

Which trail makes a complete loop around Mount Rainier?

The Wonderland Trail lost most of its low river bridges to a November 2006 flood, and it took well over a thousand volunteers working beside park crews to get the whole loop open again the following August.

Roughly how long is the trail that circles Mount Rainier?

93 miles: the loop is never level, climbing over one ridge and dropping to the next river again and again, which is why most hikers need 10 to 14 days to finish it.

The loop trail around Mount Rainier was first completed in 1915 mainly for whose use?

Rangers: the first loop hugged the park boundary at low elevation, where it stayed clear of snow longer, so that patrols could cover the park watching for fires and poachers.

What is the highest point on the loop trail that circles Mount Rainier?

Panhandle Gap is the loop's high point, a rocky pass where snow lingers well into summer, which is why the park warns that hiking the circuit before mid-July calls for ice-axe skills.

In a typical year, roughly what share of climbers who set out for Mount Rainier's summit reach it?

50%: about 10,000 people try each year and roughly half turn back, most often because the weather closes in or because the two-to-three-day climb proves harder than their fitness allows.

Which area of Mount Rainier does the National Park Service call one of the snowiest places on Earth?

Paradise averages about 640 inches of snow a year, because Pacific storms are forced up the mountain's south side and unload there, so its famous flower meadows usually stay buried until about mid-July.

About how much snow fell at Mount Rainier's snowiest weather station in the record winter of 1971-72?

1,100 inches: the exact total, 1,122 inches (28.5 metres), stood as the world record for a single year until a ski area farther north topped it by a foot and a half in the winter of 1998-99.

Which ski area broke Mount Rainier's single-season snowfall record in the winter of 1998-99?

Mount Baker Ski Area logged 1,140 inches that winter, edging the old mark by a foot and a half, even though the resort sits miles from the volcano it is named for, nearer to neighbouring Mount Shuksan.

What 14-foot showpiece was built for the lobby of Mount Rainier's 1916 inn?

A grandfather clock: carpenter Hans Fraehnke built its case and the lobby piano's, and the inn closed for two years from 2006 so the winter-battered building could be set on a solid foundation.

The Alaska cedar logs that frame Mount Rainier's grand 1916 timber inn came from trees killed by what?

A forest fire: the builders were allowed to cut the dead cedars a few miles down the road, where the blaze had killed the trees years earlier but left them standing to weather silver.

Jim Whittaker, twin brother of Rainier guide Lou Whittaker, became in 1963 the first American atop which mountain?

Mount Everest: Whittaker reached the top on May 1, 1963, with the Sherpa Nawang Gombu, a nephew of Tenzing Norgay, and that July President Kennedy welcomed the pair to the White House.

Descending from the summit in 1883, James Longmire discovered what at the site that now bears his name?

A mineral spring: Longmire built a hotel and health spa around the springs on land he patented as a mining claim, which meant the national park later created around it had little say in how his family ran the place.

Which lodging is the only one at Mount Rainier open all year round?

National Park Inn stays open all winter because Longmire sits low, at about 2,700 feet, where the road is kept open year-round, while the park's other inn, far higher up, shuts from October to mid-May.

Which developed area is the highest point in Mount Rainier National Park that you can reach by vehicle?

Sunrise, at about 6,400 feet on the northeast side, is so high that snow keeps its road shut for most of the year: it usually opens only in late June or early July and closes again by early October.

Which developed area in Mount Rainier National Park's southeast corner lies deep in old-growth forest beside hot springs?

Ohanapecosh sits so low, at about 1,900 feet, that snow rarely piles up, which lets its Douglas firs and red cedars grow enormous; some in the nearby Grove of the Patriarchs are about a thousand years old.

Mount Rainier National Park's temperate rainforest grows near which entrance?

Carbon River, in the wet northwest corner, is named for the coal found nearby; its road washed out in a 2006 flood and never reopened to cars, and the stretch inside the park was turned into a trail.

Which lake, at the end of a gravel road in Mount Rainier's northwest corner, is the park's largest and deepest?

Mowich Lake fills a basin carved out by glacial ice, and its long unpaved road is snowed in through the winter, so the area is generally open only from about mid-July to mid-October.

In 1936 Mount Rainier National Park formed a 'sister mountain' tie with a park around which other volcano?

Mount Fuji: Japanese immigrants around Puget Sound saw their home volcano in Rainier's shape, and in 1936 the two national parks sealed the tie by exchanging rocks taken from the two mountains.

Kenneth Arnold's 1947 report of nine strange objects over Mount Rainier gave the language which term?

Flying saucers: by Arnold's account he said the nine objects flew like a saucer skipped across water; reporters wrote of saucer-like craft, and the phrase was in headlines within days, about two weeks before Roswell.

The 2007 state quarter that shows Mount Rainier pairs it with which animal?

A salmon: the coin shows one leaping in front of the mountain, though the real fish are scarce inside the park, because dams downstream long blocked their runs up the rivers that drain Rainier.

Which mudflow from Rainier's summit collapse about 5,600 years ago reached the Puget Sound lowlands?

Osceola Mudflow: when part of the summit slid away about 5,600 years ago, the slurry ran down the White River to Puget Sound, and towns such as Enumclaw, Buckley and Auburn now stand on what it left behind.

Mount Rainier's 'Decade Volcano' label comes from a United Nations decade devoted to what?

Natural disaster reduction: the UN gave the 1990s that theme, and volcanologists chose 16 volcanoes for close study, Rainier among them because its mudflows could reach towns built on older deposits.

Who joined Hazard Stevens on the first documented ascent of Mount Rainier in 1870?

P. B. Van Trump and Stevens were led to their base camp by a Native guide known as Sluiskin, and Van Trump was so taken with the mountain that he climbed it at least five more times.

Fay Fuller, first woman atop Mount Rainier in 1890, wore what 'immodest' outfit?

A bloomer suit: Fuller, a 20-year-old schoolteacher, wore one of heavy flannel and blackened her face with charcoal against the glare, and she went on to help found climbing clubs that still exist, among them the Mazamas.

Mount Rainier was the first national park to be carved out of which kind of existing federal land?

A national forest: the land had been set aside in 1893 as the Pacific Forest Reserve, and Congress agreed to turn its heart into a park only once assured that it would cost the government nothing extra.

What is the name of the standard summit route on Mount Rainier, used by most guided climbs?

Disappointment Cleaver is a rock rib between two glaciers, and its route draws most of the traffic because climbers on it can set out from the stone huts of the mountain's main high camp.

Most summit attempts on Mount Rainier start from which high camp on the mountain's south side?

Camp Muir is named for the naturalist John Muir, who climbed Rainier in 1888 and then led the Sierra Club's campaign to make it a national park; its 1916 guide hut is the oldest stone building in the park.

The Liberty Ridge route, one of the Fifty Classic Climbs, ascends which aspect of Mount Rainier?

Its north face: fewer than 2 percent of Rainier's climbers take Liberty Ridge, yet it accounts for about a quarter of all deaths on summit climbs, six of them in a single fall in 2014.

Which of these is one of Mount Rainier's three named summits, alongside Columbia Crest and Liberty Cap?

Point Success is a relic of Rainier's older, higher top: thousands of years ago that top collapsed, leaving a hollow over a mile wide, and the present summit cone grew inside it, between Point Success and Liberty Cap.

Which neighbouring peak is the only one in the state, besides Rainier itself, taller than Rainier's 11,138-foot satellite summit?

Mount Adams, at roughly 12,280 feet, is the state's second-highest peak; Rainier's satellite summit would rank third if counted on its own, and in 1963 huge slabs of rock broke away from it and swept down the glacier below.

How do scientists reach the small lake hidden under the ice that fills Mount Rainier's summit crater?

Through glacier caves: heat rising from the volcano melts a labyrinth of passages under the summit ice, and the first climbers to reach the top, in 1870, survived the night by sheltering in their steam.

About how much rain fell on Mount Rainier in 36 hours in November 2006, closing the park for six months?

18 inches: the rain fell on ground already soaked by a week of drizzle and snow, so nearly all of it ran straight into the rivers, which tore out roads, bridges and campgrounds across the park.

Which Mount Rainier campground just inside the Nisqually Entrance was destroyed by the November 2006 flood and never reopened?

Sunshine Point was lost when the Nisqually River broke through its protective levees and took back about five acres, carrying off most of the campground and 200 yards of the park's main road.

All of Mount Rainier National Park became a National Historic Landmark in 1997 as a showcase of which building style?

Rustic: designers chose massive logs and glacial boulders so that entrance stations, lodges and bridges would blend into their surroundings, and no other park has kept so complete a plan from the 1920s and 1930s.

About 97% of Mount Rainier National Park carries which federal designation?

Wilderness: the designation, in place since 1988, shields nearly all of the park from new roads and other development, leaving out little more than the existing roads and developed areas.

Among peaks in the contiguous United States, Mount Rainier holds which distinction?

Most topographically prominent: Rainier rises 13,210 feet above the lowest pass linking it to any higher ground, more than any other peak in the lower 48, which is why it looms over Seattle's skyline from 60 miles away.

Which river from Rainier's southeast glaciers joins the Columbia between Kelso and Longview?

Cowlitz: the river also drains Mount St. Helens, and when that volcano erupted in 1980 the mudflows that poured into it changed the look of much of its lower valley.

Which company, co-founded by Lou Whittaker in 1969, was long Mount Rainier's only guiding concession?

RMI Expeditions, short for Rainier Mountaineering Inc., had the mountain's guided summit climbs to itself for decades, until the park opened the business to rivals to encourage competition; three companies share it today.

Which small relative of the rabbit squeaks from Mount Rainier's rock slides and dries 'haystacks' of plants for winter?

Pika: it does not hibernate, so it spends the short summer cutting plants and stashing them among the rocks, then tunnels under the snow to reach its stores all winter.

Which member of the weasel family, trapped to extinction in the state, has been released on Mount Rainier to rebuild its numbers?

Pacific fisher: prized for its fur, it was trapped out of the state, so animals were brought from British Columbia and set free in and around the park; it is one of the few predators that hunt porcupines.

Which county's emergency managers run the lahar warning system installed below Mount Rainier in 1998?

Pierce County's emergency managers watch the sensors, and in March 2024 some 45,000 students from five of its school districts took part in a single-day evacuation drill, the largest lahar drill ever held.

Why did park scientists strike Stevens Glacier from Mount Rainier's glacier list?

It stopped flowing: a glacier is by definition ice that moves, and Stevens had shrunk so far that it showed no crevasses or other signs of flow, which left the mountain with 28 named glaciers.

Which pass on Mount Rainier National Park's east boundary has a log arch that carries the Pacific Crest Trail?

Chinook Pass tops out at about 5,430 feet, so high that deep snow and avalanche danger shut its highway every winter, usually from November until mid-May; the arch doubles as a footbridge for the trail.

What gives the rivers that pour off Mount Rainier's glaciers their milky colour?

Finely ground rock: glaciers grind the bedrock beneath them into a powder called glacial flour, and the coarser debris they shed is filling the park's riverbeds, pushing rivers out of their channels and into roads.

In 1988 Congress protected most of Mount Rainier's backcountry and that of which other park?

Olympic: Congress dealt with all three of the state's national parks in 1988, giving about 95 percent of Olympic the same protection that it gave nearly all of Rainier.

Which berry drew Native families up to Mount Rainier's subalpine meadows to gather each summer?

Huckleberries: for thousands of years people came up each season to pick them and to hunt mountain goats, and there is evidence that they set fires in the high meadows to keep them open.

Which New Deal program ran camps in Mount Rainier National Park from 1933, building trails and campgrounds?

Civilian Conservation Corps: more than a thousand young men came each summer until 1940 to build trails, improve campgrounds and fight fires, earning $30 a month, most of which had to be sent home to their families.