Summary:
Explore the major features of the National Monument – basalt formations, soda springs and a 101-ft waterfall.

The trail follows the middle fork of the San Joaquin River as it heads south towards Devils Postpile. After 0.25 mile, take the short side-trip to Soda Springs – cold, carbonated springs on a river gravel bar.

Carry on along the main trail, turning left just before you reach the Postpile to climb to the top of it. Here you have a good opportunity to examine the seven-sided shape of the columns, formed from cooling basalt lava. Continue over the Postpile and descend to rejoin the main trail.

At the next junction, take the left trail to start a loop that leads to Rainbow Falls. After 0.75 mile, cross the John Muir and Pacific Crest Trails, and continue on for a little over 0.5 mile to another junction. Here turn left, and take a side trail to the right after less than 0.25 mile to reach the main falls. The lower falls are 0.5 mile further on.

Retrace your steps along the side trail and complete the loop. Keep left at the trail junctions, to return via the face of Devils Postpile to the trailhead.

Directions: From US 395 between Bishop and Yosemite, take Route 203 west for 10 miles, then a further 7 miles on a paved mountain road.

Trailhead: Close to the ranger station. A shuttle bus runs late June to early September.

Length: 5.5 miles / 8.8 km

Trail Type: Out and back

Elevation Change: N/A

Duration: 3 hours

Trail Condition: Well defined.

Features: Fascinating basalt formation, waterfall.

Climate: Summer-only trail.

Accommodation: Camping available both inside the Monument and nearby at Red Meadows and along the San Joaquin River.

Trail Notes: Access road closed in winter.