Hells Canyon, Warm Lake and Smelterville: ... Over 2.5 million gallons of hot springs water bubble up through pools, where temperatures are at least 100 degrees Fahrenheit.

Follow Castle Hot Springs Road 5.4 miles to the stop sign at the park’s north entrance. Turn left, drive 5.4 miles to a cattle guard past mile marker 25 and park in any of the turnouts along the ...

Hells Canyon can be heavenly during spring, when wildflowers are blooming, poison ivy is leafing out, canyon wrens are singing and rattlesnakes are getting frisky.