Two days of demanding climbing to camp facing the most addictive spectacle in Central America: the Fuego volcano spitting glowing lava, right at your eye level, all night long. Acatenango (3,976 m) is Fuego's sleeping twin, and from its campsite you watch every eruption live. The ascent takes 6 to 7 hours and the cold at the summit is real. One of those nights you never forget.