When you think you have seen all display in a museum, you probably don’t know behind a closed door, there is ever larger collection not visible to public. The Museum’s private storage is almost unfathomable in size and scope, containing curiosities that span from birds to bones to butterflies. The artifacts are scrupulously preserved, catalogued, and organized, so that authorized scientific experts can explore for new discoveries. Thanks to photographer Chip Clark and The Smithsonian Institution’s National Museum of Natural History in Washington, D.C, we have a chance to take a peek at those secluded shelves which are usually off-limits to the public. Get ready to be impressed.