Big Basin Trail #840: Utilize the lower portion of the Hyndman Creek Trail #166 to get to the start of this trail. After 2.3 miles on the #166, turn right and cross the creek to start up the Big Basin Trail #840. As you get higher up into the drainage the trail fades in and out, but you are traveling in the bottom of a huge canyon, so its pretty hard to get turned-around and disoriented. Turn around whenever you are ready to call it quits on the climbing.

Directions: Take Hwy 75 south from Ketchum (5.5 mi) or north from Hailey (6.3 mi) to the stoplight at East Fork Rd. Turn east and drive 6 miles on pavement and 1.3 miles on dirt to the Hyndman Creek junction (7.3 mi). Turn left onto Hyndman Cr. Rd. #203 and continue to the second private drive (2.3 mi). Bear left into the creek bottom and left again after crossing the creek. Follow the main road to the trailhead (2.6 mi).