Snake River and Swan Falls- Wees Bar Petroglyphs Trail

This is an out-and-back trail, approximately 11.4 to 12.2 miles (18.3 to 19.6 km) round trip. While the duration can vary greatly depending on your pace and how much time you spend exploring the petroglyphs, expect it to be a longer hike, likely requiring 5-7 hours or more to complete comfortably.

The trail is generally considered moderate to strenuous due to its length and an elevation gain of around 500 to 839 feet (152-256 meters). The path primarily follows a jeep trail that hugs the Snake River. It can be dry, but may also be wet depending on the season. Be prepared for potential tumbleweed 'traffic jams' in some sections. During warmer months, hikers should also be aware of snakes.

The trail begins at the Swan Falls Dam. You will need to cross the dam itself to access the trailhead. Parking is available near the dam.

The most significant highlight is the Wees Bar Petroglyphs, one of Idaho's largest collections of ancient rock art. You'll also pass the historic Swan Falls Dam, the former site of the Priest Ranch Homestead and its orchard, and the Wees Bar Stone House, offering glimpses into the area's history.

The best time to visit is typically between October and June to avoid the harsh sun and extreme heat of summer. Spring (March-May) is particularly good for observing raptors during mating season, and mornings or evenings in spring and fall offer the most scenic light.

Yes, dogs are generally allowed on the trail. However, given that it's within the Morley Nelson Snake River Birds of Prey National Conservation Area and you may encounter wildlife, it's always best to keep your dog on a leash and practice Leave No Trace principles.

As of current information, there are typically no specific permits or entrance fees required to hike this trail or enter the Morley Nelson Snake River Birds of Prey National Conservation Area. However, it's always a good idea to check the official BLM (Bureau of Land Management) website for any updated regulations before your visit.

Being in the Morley Nelson Snake River Birds of Prey National Conservation Area, you have an excellent chance to observe various raptors, including hawks, eagles, and falcons, especially during mating season in the spring. During warmer months, be aware of snakes on the trail.

During warmer months (July-September), the trail can be very hot and exposed, making it less enjoyable and potentially hazardous. The trail can be dry, but may also be wet depending on the season. Winter hiking is possible, but be prepared for colder temperatures and potentially muddy or icy conditions. Spring and fall offer the most pleasant temperatures and opportunities for wildlife viewing.

To fully appreciate the ancient Wees Bar Petroglyphs, allow ample time for exploration once you reach the site. The carvings are spread across hundreds of basalt boulders, and taking your time will allow you to discover more of these remarkable historical artworks. Also, consider starting early in the morning to enjoy cooler temperatures and better light for photography.

Given the trail's length and exposure, essential items include plenty of water, sun protection (hat, sunscreen), sturdy hiking shoes, snacks, and layers of clothing. Binoculars are recommended for birdwatching, and a camera for capturing the scenic views and petroglyphs. Always carry a map or GPS device, as cell service can be unreliable.