What are the motifs in Death in Yellowstone: Accidents and Foolhardiness in the First National Park by Lee Whittlesey?

Irresponsibility is a recurring idea. The author, Lee Whittlesey, claims to have written Death in Yellowstone in order to acquaint people with the dangers in Yellowstone and to show how serious those dangers can be. Over three hundred people have died in Yellowstone due to Yellowstone related causes since its inception and many of these deaths were not only gruesome but easily avoidable.