0.2 mi / 0.3 km. One of the most beautiful South Unit overlooks is accessible by this easy nature trail with slight grade. This overlook is a ranger favorite for sunsets over the badlands! Little Mo Trail. North Unit. 30 - 45 minutes. 0.7 mi / 1.1 km (paved inner loop) 1.1 mi / 1.8 km (unpaved outer loop)