Caution sign on the Lady Bird Johnson Trail in Redwood National Park, UNESCO World Heritage Site, California, United States of America, North America

horizontal color image travel destinations travel front view outdoors day focus on foreground selective focus no people usa north america california lady bird johnson trail redwood national park national park unesco unesco world heritage site caution sign sign text male likeness animal representation elk cervus canadensis aggressive grass yellow daytime national parks public land nobody no one no person outdoor outside travel destination tourist destination tourist destinations