In Sketching The Silk Road, two American painters illuminate the shapes, textures and spirit of Chinese art and culture as they trace an ancient trade route through barren desert to China’s most famous Buddhist cave art. Armed with only their sketchbooks, creativity and sense of adventure, San Francisco-based artists Rachel Sager and Todd Thompson travel by camel, paraglider and on foot to explore Dunhuang’s mystical Echoing Dunes and Mogao Grottoes.