Brendan James struggling to get the fatbikes down the steep trail to Volcán Santiaguito. The look on his face says it all. The approach to Volcán Santiaguito. descends 3300ft in half a mile, making it one of the hardest and least visited of all of Guatemala's volcanoes. | Photos from Expedition Volcanarchy: Fatbiking Guatemala's Highest Volcanoes.