1/4 Dollar 'Washington Quarter' Frank Church River of No Return Wilderness, Idaho

The Frank Church River of No Return Wilderness, established by the Central Idaho Wilderness Act of 1980, is the largest contiguous wilderness area in the lower 48 states at over 2.3 million acres. The quarter was released as part of the America the Beautiful series, which Congress authorized in 2008 to run through 2021 — five designs per year, one per state or territory. Idaho's entry appeared in the fourth release of 2019.

The wilderness was named posthumously for Senator Frank Church, the Idaho Democrat who championed the original legislation but died of pancreatic cancer in April 1984, just four years after the law passed.