We’ve run reviews of many “Where are we?” books over the years, but this one is easily the most clear and easy to use. Absolutely everything is explained in a way that does not subtly assume that you have a degree (so to speak) in advanced trigonometry. All those little symbols you see on maps are discussed, and after 25 years of trail experience I finally found out what those yellow square markers you see along trails are for. The author even gets into navigation with an altimeter! And there’s a good chapter on finding your way by the stars—including the Southern Hemisphere in case you end up in New Zealand. All this stuff is presented in a commendably relaxed way that makes it easy to remember without the book.