Chapada Diamantina is an enormous national park in Brazil, a little larger than the state of Maryland. It consists of mountainous plateaus edged by cliffs, some of which are 2,000 feet high. Trekkers in the area can see vistas of wide-open valleys, waterfalls, swimming holes, and underwater lagoons the color of sapphires. From Lençois, a town that serves as the most popular gateway to the park, it’s about a half-hour drive to the trailhead for Morro Do Pai Inácio (Hill of Father Ignatius), where a 0.3-mile hike takes you to…
