Standing on the shoreline of Lake Titicaca in the brilliant morning sun, it’s the scale that overtakes your senses. Nestled amongst snowcapped 20,000-foot Andean peaks, the lake itself is a vast expanse of impossibly blue water. It measures a staggering 118 miles by 50 miles. With an average depth of 351 feet it is South America’s largest lake by volume, while also being one of its highest at 12,507 feet.