Fodor's Expert Review Mammoth Hot Springs Terraces

Multicolor travertine terraces formed by slowly escaping hot mineral water mark this unusual geological formation, one of the most remarkable sights in the park. You can explore the terraces via an elaborate network of boardwalks, the best of which is the Lower Terrace Interpretive Trail. If you head uphill from Liberty Cap, near the lower parking area, in a half-hour you'll pass bright and ornately terraced Minerva Spring, and in an hour you can make your way up to the Main Terrace Overlook and the side trail to Canary Spring. Along the way you might spot elk grazing nearby. Alternatively, you can drive up to the Main Terrace Overlook on Upper Terrace Drive and hike down to the Lower Terrace. Distances are fairly short amid these terraces, but give yourself at least a couple of hours to thoroughly explore them—especially if you enjoy taking lots of pictures.