Assertion: wilderness's acre | /r/HasProperty | 48.6 km2
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text: However, the wilderness encompasses land that was originally part of three National Forests: 150,071 acres (607.32 km2) in Boise National Forest, 12,020 acres (48.6 km2) in Challis National Forest, and 54,997 acres (222.56 km2) in Sawtooth National Forest.