On August 30, 1805, the two groups ( Corps of Discovery & Shoshones)  part company.  The Corps head north to Lost Trail Pass and on to the Bitterroot Valley of western Montana, into the land of the Salish; accompanied by their hired guide Old Toby and his sons.

Historical Sites to see in the area.

1. Sacajawea Memorial Camp:  Located east of the Lewis and Clark Back Country Byway in Montana. Interpretive signs & a wildflower interpretive trail. 

2. Lemhi Pass-Continental Divide: Mile 26 of the Back Country Byway, rough trailhead & interpretive signs.  Lewis crossed this point on August 12, 1805.

3. 3.Flag Unfurling Sign:  Mile 115.8 of Hwy 28 near Tendoy.  Tendoy is the entrance to Agency Creek Road, which leads to Lemhi Pass.  Dirt road is steep and narrow, generally impassable all winter.  Call ahead to find out current conditions, BLM (208) 756-5400. 

4. Meeting of Two Cultures:  Approx. 0.4 on Alkali Flat Road, which is at mile 4.1 on Back Country Byway.  Sign & hiking activities. 

5. Back Country Byway Tour Kiosk

6. Sacajawea Signs:  Monument, mile 120.5, Hwy 28; Famed Interpreter sign, mile 122.5 Hwy 28.  Signs celebrating the birthplace of Sacajawea, the Lemhi Shoshoni woman who accompanied the Expedition.
     Sacajawea Interpretive Center - Salmon, Idaho

7. The Bluff:  Interpretive sign.  On August 21, 1805, Clark and party reached the Salmon River and camped near this spot by the bluff near the mouth of Tower Creek.

8. Wagonhammer Springs:  Mile 324 US Hwy 93 Lewis and Clark trail can be reached by walking 2 miles up West Wagonhammer Creek to Thompson Gulch, follow marked trail on left. 

9. Lost Trail Pass:  Elevation 7,014 feet.  Visitor's Center is open during summer at Idaho-Montana border. 

10. Nez Perce National Historic Trail:  Mile 7 US Hwy 93 South, follows the route taken by the Nez Perce during the War of 1877, and is an opportunity to hike the area where Clark traveled.  An of-highway section is accessed from Hwy 93 south of Indian Trees Campground.

11. Indian Trees Campground:  Near mile 8 on US Hwy 93, 1 mile SW on Forest Road 729.  In the Bitterroot Valley and surrounding mountains, scars are often visible on the trunks of centuries-old Ponderosa pine trees.  Salish, Kootenai, Nez Perce and Shoshoni Tribes stripped pieces of outer bark to obtain the tree's sweet cambium layer for food.  Culturally scarred trees are federally protected. 

12. Sula Ranger Station:  Mile 11 US Hwy 93 South.  The ranger station is just south of the "Great Clearing" (Ross's Hole), site of the Salish village where the Expedition spent two nights.  Clark camped nearby on his return trip in July 1806.

Map Source:  Idaho Travel Council