I stood there at the glacier’s edge, at 15,200ft, feeling utterly overwhelmed with a sense of the smallness of our human scale.

Navigating the Lava Fields of the Active Volcano, Pacaya, in Guatemala.

Dusk falls as my Enfield and I pull into the tiny town of Jesus María village. It took all day to ride the winding mountain road here from Durango; two hundred miles of swoops and dips, climbs in altitude and falls to scorching valleys. It’s the kind of ride Kaleidos and I could spend a winter dreaming of, twisting half-broken pavement designed for us to bounce across. The mountain scenery of the Sierra Madres is spectacular. Colorful cliffs thrusting upwards, resplendent bands of pink and...