WHERE IS THIS???
In Montana.
Don’t know where in Montana, however.
According to Grok,
The Sage Wall is located at the Sage Mountain Center, a privately owned retreat near Whitehall, Montana, in the southwestern part of the state. It is situated within the rugged terrain of the Boulder Batholith, a geological formation of granite rock in the Elkhorn Mountains. The Sage Mountain Center is approximately 13 miles from Butte, Montana, off Highway 2, near Toll Mountain Road. For specific directions, starting from Interstate 90 in Butte, you would take the South Harrison Avenue exit, head south for about 3 miles, then turn left onto Highway 2 toward Whitehall. After roughly 13 miles (between mile markers 70 and 71), you’d turn left onto Toll Mountain Road, a dirt road marked by mailboxes, and follow it for about 1.5 miles until you reach the Sage Mountain Trail sign. From there, it’s another 1.5 miles to the center itself. Since the Sage Wall is on private property, visiting requires a reservation through the Sage Mountain Center, typically available from May to October, weather permitting.