This hike takes you up the historical wagon road to the top of the mountain, where you'll find the ruins of mine buildings. Start by hiking along the Root Glacier Trail until a NPS junction sign points you right up the mountain. You'll ascend about 2,000 feet (1.5–2 hours) before rising above the tree line; even if you go no further, the view is worth the effort. However, you can also continue up another 2,000–3,000 feet to the top, where the mine ruins are tucked in the back of the alpine valley. (It takes a reasonably fit person at least 3.5 hours to get here.)
This is where the richest copper strike in world history was made—and it was easy to find, as it was sticking right out of the ground. You'll also see tram towers and other piles of historical artifacts. From here there's also access to a grand alpine ridge that provides sweeping views of the local glaciers and ice-covered mountains. Keep your eyes open for the large population of black bears, especially when eating. There is drinking water, but not until you've been hiking for several hours—so start hydrated and with a full water bottle. Figure the full hike will take 6–8 hours.