...Since Johnson signed the act, the number of wilderness areas has increased to more than 750. They range from the tiny Pelican Island Wilderness in central Florida, which is just 5.5 acres, to the immense Wrangell–St. Elias Wilderness, which at nearly 9.1 million acres is bigger than Belgium. All told, officially designated wilderness covers 5 percent of the U.S., an area larger than California.
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