Park guides scout sediment for bones in the Kelly Hill Caves on Kangaroo Island, one of the last places megafauna survived in Australia. The photo was taken on assignment for a story in the October 2010 issue about the vanishing giant animals.
PHOTOGRAPH BY AMY TOENSING, NAT GEO IMAGE COLLECTION
African penguins forage near their rookeries on Mercury Island in Namibia. The previously unpublished photo was taken for a story in the December 2014 issue about how to sustain fishing communities in Southern Africa.
PHOTOGRAPH BY THOMAS P. PESCHAK, NAT GEO IMAGE COLLECTION
Boxers pay homage to their teachers and spirits before a match at Rajadamnern Stadium in Bangkok, Thailand. The photograph was published in a story in the July 1967 issue about the repercussions of U.S. economic aid in Thailand.
PHOTOGRAPH BY DEAN CONGER, NAT GEO IMAGE COLLECTION
Feral cats, believed to be the only animals to have domesticated themselves, roam the streets of Baltimore, Maryland. The image was taken for a story in the March 2011 issue about animal domestication.
PHOTOGRAPH BY VINCENT J. MUSI, NAT GEO IMAGE COLLECTION
A woman plays a kayagum, a Korean musical instrument with 12 silk strings and matching bridges. The previously unpublished image highlights life in Kyoungju, South Korea, an ancient city that once served as the capital during the Silla dynasty.
PHOTOGRAPH BY H. EDWARD KIM, NAT GEO IMAGE COLLECTION
Children spend the night in sleeping bags at the Field Museum in Chicago, Illinois. The image, published in National Geographic's Italian-language edition in March 2005, marks Museums and Galleries Month.
PHOTOGRAPH BY LYNN JOHNSON, NAT GEO IMAGE COLLECTION
A baby sloth snuggles up to a teddy bear for comfort at a rescue center in Manaus, Brazil. The photograph was taken on assignment for an October 2017 digital investigation of deadly wildlife tourism in Amazonian cities.
PHOTOGRAPH BY KIRSTEN LUCE, NAT GEO IMAGE COLLECTION
A chameleon captures its prey with its tongue in Andasibe, Madagascar. The image was published in a story in the February 1987 issue about the threats to the island's biodiversity.
PHOTOGRAPH BY FRANS LANTING, NAT GEO IMAGE COLLECTION
A man sells goldfish in baggies tied to a tree branch at the Shatila Palestinian Camp in Beirut, Lebanon. The image was published in an editor's note in the February 1983 issue about the magazine's coverage of Lebanon's civil war.
PHOTOGRAPH BY W.E. GARRETT, NAT GEO IMAGE COLLECTION
Yellow leafy spurge grows along Idaho's Medicine Lodge Creek, a public land with a privately owned river bottom. The image was taken for a story in the August 2001 issue about public lands maintained by the Bureau of Land Management.
PHOTOGRAPH BY MELISSA FARLOW, NAT GEO IMAGE COLLECTION
Two women in traditional dresses light candles at the City Palace in Jaipur, India, in observance of Diwali. The image, published online in August 2008, marks the holiday, also called the Festival of Lights.
PHOTOGRAPH BY JOE MCNALLY, NAT GEO IMAGE COLLECTION
Actors get ready backstage before a performance of the opera "Chen Long Kai Xu" near Guangzhou, China. The image was taken for a profile in the December 1991 issue about Ibn Battuta, a famous traveler who journeyed from North Africa to China.
PHOTOGRAPH BY JAMES L. STANFIELD, NAT GEO IMAGE COLLECTION
A woman sits on top of a large white anthill, some of which can rise up to 40 feet high, near Elizabethville in the former Belgian Congo. The image was taken for a story in the October 1922 issue about a navy operation in Africa during World War I.
PHOTOGRAPH BY FRANK J. MAGEE, NAT GEO IMAGE COLLECTION
Yellow plants grow near a rocky stream in New York's Adirondack Mountains. The image was taken on assignment for a story in the June 1998 issue highlighting the beauty of the large state park.
PHOTOGRAPH BY MARIA STENZEL, NAT GEO IMAGE COLLECTION
A Decken's sifaka lemur sits among the limestone towers in Madagascar's Grand Tsingy. The image was taken for a story in the November 2009 issue about the labyrinth of stone.
PHOTOGRAPH BY STEPHEN ALVAREZ, NAT GEO IMAGE COLLECTION
Children dance in giant mask-like costumes in Japan. The previously unpublished image was taken on one of Eliza R. Scidmore's many trips to Japan as the first woman to sit on the board of trustees of the National Geographic Society.
PHOTOGRAPH BY ELIZA R. SCIDMORE, NAT GEO IMAGE COLLECTION
A street is decorated with witches, skeletons, and jack-o'-lanterns for Halloween in Blackpool, England. The previously unpublished image shows the city's tradition of elaborate seasonal decorations dating back to 1912.
PHOTOGRAPH BY TOMASZ TOMASZEWSKI, NAT GEO IMAGE COLLECTION
A man wrapped in gauze as part of a costume sits in the back of a taxi on Halloween in New York City. The festive image was previously published in a digital story in October 2014.
PHOTOGRAPH BY JODI COBB, NAT GEO IMAGE COLLECTION