List of old-growth forests

Columns: State | Area | Old-growth extent | WWF ecoregion | Old-growth forest type
California | Yosemite National Park | 225,510 acres ( 91,260 ha ) | Sierra Nevada forests | Giant Sequoia , Ponderosa Pine , Jeffrey Pine , Sugar Pine , White Fir , California Incense Cedar , Coast Douglas-fir , Red Fir , Western White Pine , Lodgepole Pine , Foxtail Pine | California | Sequoia - Kings Canyon National Park | 202,430 acres ( 81,920 ha ) | Sierra Nevada forests | Giant Sequoia , Ponderosa Pine , Jeffrey Pine , Sugar Pine , White Fir , Red Fir , California Incense Cedar | California | Lassen Volcanic National Park | 27,130 acres ( 10,980 ha ) | Sierra Nevada forests | Ponderosa Pine , Jeffrey Pine , Sugar Pine , White Fir , Red Fir , Western White Pine , Mountain Hemlock , Lodgepole Pine , Whitebark Pine | California | Redwood National and State Parks | 38,982 acres ( 15,775 ha ) or more | Northern California coastal forests | Coast Redwood | California | Humboldt Redwoods State Park | 23,600 acres ( 9,600 ha ) | Northern California coastal forests | Coast Redwood | California | Muir Woods National Monument | 240 acres ( 97 ha ) | California interior chaparral and woodlands | Coast Redwood | California | Samuel P. Taylor State Park | 600 acres ( 240 ha ) | California interior chaparral and woodlands | Coast Redwood

Example questions:
When was the area on the list designated a wilderness that is in the state that is the 24th-most populous of the United States ? | How many residents are in the state that has the old wilderness area containing the largest plug dome volcano in the world ? | Who were the first non-natives to inhabit the state that has an old wilderness area that contains the Coast Mountains ? | What is the capital of the state that contains a wilderness area with an international border ?

Answers:
1975 | 39.5 million | The Russians | Juneau