Access to Black Butte in the Morley Nelson Snake River Birds of Prey National Conservation Area (NCA) is off Range Road. The Range Road loop encircles the Idaho National Guard Artillery Range--a live fire range used for training. DO NOT go into the inner part of the loop! Signs are spaced every 100 yards and at the intersections of all roads leading into the artillery range, warning you to keep out. Please obey those signs!
Black Butte is outside the southern end of the artillery range. The butte is not exceptionally high or imposing but offers a spectacular view of the Snake River from its southeast side. The views of the river, its steep-walled canyon, and the mountains in the distance are well worth the short trip! The end of the road above the river would be a fine place to camp. Dispersed camping is allowed anywhere outside of the artillery range in the NCA!
The trail is not particularly difficult but does have rough and rocky patches. Recent rains can cause considerable puddling in the tire tracks and slippery conditions.