We're drawn to the soothing effects of nature; getting the legs moving enhances our physical health and experiencing quietude, while submersed in the elements, can bring calming tranquility to the mind. Top photo: the idyll of serenity most of us hold in our mind when imaging a relaxing getaway to Yellowstone. Image above: What happens when thousands upon thousands of others set out for America's premier nature preserve with similar intentions in mind? A scene from the boardwalk around Old Faithful Geyser on a summer day. It has been said that sometimes a person has to escape deeper into nature after encountering the human crowds drawn to this natural wonder. Photos courtesy Neal Herbert/NPS