Sapphire Pool steams on a stormy morning. Original public domain image from Flickr https://www.rawpixel.com/image/4032568/photo-image-background-nature-mountainFree Image from public domain licenseSapphire Pool, Biscuit Basin by Jim Peaco. Original public domain image from Flickr https://www.rawpixel.com/image/4038662/photo-image-tree-ocean-plantFree Image from public domain license