Hikers Entering the Grand Canyon. Photographer: Eiler, Terry. Original public domain image from Flickr https://www.rawpixel.com/image/8799981/photo-image-public-domain-mountain-personFree Image from public domain licenseEntering the Grand Canyon. Photographer: Eiler, Terry. Original public domain image from Flickr https://www.rawpixel.com/image/8770535/photo-image-animal-horse-grand-canyonFree Image from public domain licenseEntering the Grand Canyon. Photographer: Eiler, Terry. Original public domain image from Flickr https://www.rawpixel.com/image/8770399/photo-image-animal-horse-grand-canyonFree Image from public domain license