Sheer peaks mark the eastern edge of Montana's Mission Valley. Gray Wolf, the southernmost, is a fist. East and West Saint Mary's are shoulders without a head between them. Kakashe is a rampart, with higher pinnacles overtopping it from behind like breakers cresting a seawall. All are made of gray stone, with fissures, walls, and drops that give pause to the most intrepid climbers. They are quick to gather snow, slow in losing it through summer. The mountains, which form the eastern margin of the Flathead Indian Reservation, shelter a healthy population of grizzly bears. As fall gives way to winter, these bears climb. Disappearing into well-hidden dens, they wait for spring. Up there in February, it looks like nothing is passing but time, wind, and occasional ravens, but grizzlies are busy underground. In secret, deep-drifted nooks, they breathe and stir. Sows give birth in darkness. Sometime around the year 2000--it might have been a winter or two before--in a den smelling of earth and ursine rancidity, a cub was born. She probably had a sibling or two, as grizzlies are mostly born in pairs or trios. Until spring came, the writhing of her littermates and her mother's warmth were her whole world. Though much is now known about that cub--her life, movements, and the circumstances of her end--no one can say precisely where or when she was born. It is enough to say that she was born in the high country, into a den that no human found or entered. In this, she was like most bears that have been born in the Missions since the recession of Pleistocene ice revealed mountains to the sun. Emerging into spring, she was shown by a careful mother how to get about in the mountains. She learned which things were to be eaten and which were dangerous. In time, she descended with her mother across ridges and avalanche chutes toward the valley floor. Down in that settled, domesticated landscape, she smelled and saw human beings for the first time. She learned to be wary of gravel roads and highways and to move discreetly among farms and the scattered houses of rural subdivisions. She slept one more winter in her mother's den, woke, and made the seasonal round as a yearling. Then, breaking with her family, she went out alone. She grew into adulthood, weighing nearly five hundred pounds and measuring three feet tall at the shoulder. Rising on her hind legs to pluck apples from a tree, she could reach higher than most people. Her forepaws were wide and black padded, and they hardened as she went about mapping the smells, contours, and hazards of her home range. She lived a grizzly's solitary life, and if she was seen at all by the men and women who lived in the valley, it was as a disappearing flash or a shadow against the night. In 2002, in the blue light that follows dusk in late summer, she left off foraging and walked down from the foothills into a tangled aspen grove. Crossing Millie's Woods--the copse for which she'd soon be named--the bear came to a place where she could see farmstead lights spread across the floor of the Mission Valley, glittering like shards of a bottle dropped from a great height. While darkness thickened, she shuffled along a well-worn game trail, giving a generous berth to barnyards and houses. Hearing the faraway barking of dogs, she kept to the low ground of potholes and sloughs. She came in search of ripening apples and the chokecherries weighing down the branches along the banks of irrigation canals. Descending step by cautious step, keeping pace with the night, she left the Mission Range behind. In doing so, she walked out of a wilderness that has remained essentially unchanged since the end of the last ice age, and into an unforgiving arcadia. The primeval valley--the fertile, deep soil that had succored native people and grizzly bears for thousands of years--was hidden by roads, power lines, prefabricated ranch-style houses, tilled fields, and uncountable miles of barbwire fence. Cars and trucks hurtled day and night along Highway 93. Except for the timbered corridors along streams, the land was settled, cleared, and cropped. There were pastures and hayfields, gardens and chicken coops, pigsties, grain bins, and trash piles--all manner of things that could lead a bear into conflict with people or livestock, and therefore to ruin. The farms were small by Montana standards, with most holdings measuring between twenty and eighty acres. The landscape was not paved over or entirely ruined for a grizzly bear's purposes, as parts of the Missoula and Bitterroot valleys are, but it was a difficult, dangerous place to survive. Excerpted from Down from the Mountain: The Life and Death of a Grizzly Bear by Bryce Andrews All rights reserved by the original copyright owners. Excerpts are provided for display purposes only and may not be reproduced, reprinted or distributed without the written permission of the publisher.