Hiking at night offers rewards not offered in daylight. This type of hiking calls for a different level of concentration: your world is defined by the sphere of light cast by your headlamp. You tune in the sounds of the night, which are not the same as the sounds of daytime: more owls than warblers, more raccoons than squirrels. Pause in a clearing, snuff your light and you can see the glories of the vast night sky. It’s a special place, the night world, and it is one well worth explori...