Time to test your park unit knowledge with this National Parks Quiz and Trivia #30. See how much you know about some of the National Park Service’s 423 units and maybe learn something new.

Once upon a time in the Midwest, almost a century ago, there was talk of creating a "Great Plains National Monument" that would preserve a slice of grasslands that once dominated that part of the nation. Today there's talk of rescuing the grasslands that once swept the horizon in a wide belt ranging from Canada to Mexico.

Leave it as It Is is the most engaging and powerful book about Western public lands that I have read in a long time. Gessner published a terrific book in 2015 titled All the Wild That Remains: Edward Abbey, Wallace Stegner, and the American West, and I find some Abbey and Stegner in this new book, both in style and content. He traveled the West in search of Abbey and Stegner in that book as he does with Teddy Roosevelt in this one. He looks at all these icons in the context of the modern West with a clear and analytical eye.