A network of branching thermal features radiates downward in black line work against a soft yellow ground, mapping the geothermal arteries that define Yellowstone's landscape. The minimalist illustration captures the raw geological drama of the park through stark, organic linework that evokes both scientific precision and natural wonder. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.