I'd not been on this Pass before. It was very nice. I was surprised about the skiing part as I had not heard of it before. However, I am not a snow skiier. To read the info on the signs, which I thought was interesting, click on Original.

Lost Trail Pass is a 7,014-foot (2,138 m) mountain pass on the Idaho-Montana border in the Bitterroot Mountains, traversed by U.S. Highway 93. It is a historic crossing used by the Lewis and Clark expedition in 1805 and is located near the Lost Trail Ski Area, known for high-altitude skiing and snowboarding.
Lost Trail Ski Area

Key Details About Lost Trail Pass:
Location: Border of Lemhi County, Idaho, and Ravalli County, Montana, within the Bitterroot National Forest.
Access & Elevation: U.S. Highway 93 passes over the 7,014-foot elevation, offering scenic views of the Bitterroot Valley.
Lost Trail Ski Area: Situated at the pass, this area receives 350 inches of snow annually, featuring 1,800 acres of terrain, 5 double chairlifts, and 3 rope tows.
History: Named after the "lost trail" followed by Captain Clark and his Shoshone guide in 1805.
Activities: The area is popular for skiing/snowboarding in the winter (Thursday-Sunday), and hiking/scenic driving in the summer.
Amenities: Features a day lodge, RFID-enabled ticketing, and various ski school programs