Yet despite its popularity, few people know how Adam’s Gulch got its name – or about its deep ties to the valley’s early lumber industry. The story stretches back more than a century and follows three families whose lives became intertwined with the gulch. Through hard work, changing fortunes, and tragedy, they helped shape the place that would eventually become one of Sun Valley’s most treasured outdoor spaces.

The gulch is named for Abijah Adams. Originally from Massachusetts, Adams moved to the Wood River Valley to start a lumber business. In 1881, he built a sawmill near the confluence of what are now known as Adams Gulch and Eve Gulch. As the booming mining industry created an ever-growing demand for lumber, Adams opened a second mill in 1886, this one a little closer to town.

After Adams’ death in 1892, the sawmill was sold to Hobart Beamer, a Hailey native who hired Thornton “Wes” Flowers, originally from West Virginia, to work at the mill. Flowers and his family lived on the property, which by then included several houses and cabins as well as a boarding house. Wes’ wife, Addie, helped prepare meals for the sawyers who lived there.

In 1907, Flowers bought the sawmill from Beamer and applied for a homestead at the mouth of the gulch. The family built a frame house and several outbuildings, and in 1910 moved the mill closer to their home.

Tragedy struck the following year. In 1911, Wes and his eldest son, Arthur, were killed in an avalanche. Wes’ 18-year-old son, Eugene, was nearby when the slide occurred but survived. Eugene and his 14-year-old brother, George, took over the family sawmill, keeping it in operation for decades. The brothers continued running the mill until George’s death in 1968.

Adams Gulch began its transformation into the hiking and mountain biking destination we know today only about 40 years ago. Butch Harper and a team of volunteers built upon existing trails in Eve Gulch, wielding Pulaskis and other hand tools to create Lanes Trail and Shady Side. Later, the trail system expanded farther, eventually connecting with Lake Creek via Harper’s Trail.

Today, thousands of hikers, runners, mountain bikers, and dogs travel these trails every year, most without realizing they are moving through more than a century of Wood River Valley history. Adams, Beamer, and Wes Flowers may be gone, but their legacy is still all around us. Lumber cut at the Adams Gulch mills was used to build homes throughout the valley – and even portions of the Sun Valley Lodge.

The next time you head up Adams Gulch, remember: the trails may be relatively new, but the history beneath your feet runs much deeper.

Sources:

“Archaeological and Historic Survey Report,” prepared by Claudia Taylor Walsworth
“The Flowers Sawmill” — The Community Library
“A Valley Gem” — Idaho Mountain Express, June 17, 2026