Next time somebody tells you ‘take a hike,’ you tell ‘em you did, and it was for a good cause. Today is National Trails Day, and we’re on the South Kaibab Trail in Grand Canyon National Park. The National Trails System in the US turns 50 this year. Want to pay your respects to a trail you love? Take a hike and do your best to leave it better than you found it—pack out any trash you may find or join a trail improvement project—the point is to get out there and give back some of the love you get from hiking trails.