BUTTE, MONT. — Zac Cavaness understands why hikers and mountain bikers might get alarmed when they see him building trails with his excavator. “I’ve had people freak out when they come up and see me ...

A spider that can crawl up and down the hills below the Rims is performing a series of tests in the the lead-up to reconstruction of Zimmerman Trail. Dan Nebel, a senior geologist with Terracon, said ...