Mount Rushmore may be the main reason you’re here, so don’t gaze and then go away. There’s much to be found below the faces. Here are a few tips: 1) Sample the ice cream at the restaurant; the vanilla is made from Thomas Jefferson’s own recipe. 2) Don’t skip a visit to the 1939 sculptor’s studio, where you’ll sense the history of the monument. 3) Hike the Presidential Trail, not just for better views of the faces but also for the nature (you might even meet a mountain goat). 4) Hang around for the patriotic lighting ceremony, which begins at 9 p.m. daily from late May to late September.