Bryan and Cherry Alexander / Chukchi girls, with their family's ancestral clan mark painted in reindeer blood on their face, a ritual during the Chukchi 'Festival of the Young Reindeer' during which young reindeer are sacrificed....

Jabruson / Traditional animistic ceremony with primate masks during Ebola disease outbreak, Democratic Republic of Congo, Mondomessokou

Bryan and Cherry Alexander / The skins and meat from sacrificed young reindeer adorns the inside of a Chukchi Yaranga (tent) during the 'Festival of the Young Reindeer'. Iultinsky District, Chukotka, Siberia, Russia

Bryan and Cherry Alexander / Young girl Nadia Takui eating specially prepared ritual food, including dried reindeer intestine and a sausage made from chopped reindeer meat and fat, during the Chukchi 'Festival of the Young Reind...

Bryan and Cherry Alexander / The men and children of the family place specially prepared food on the ground for the spirits during the Chukchi 'Festival of the Young Reindeer' during which young reindeer are sacrificed. Iultinsk...

Bryan and Cherry Alexander / Reindeer are brought to the camp at first light during the Chukchi 'Festival of the Young Reindeer' begins. Iultinsky District, Chukotka, Siberia, Russia, August 2013.

Bryan and Cherry Alexander / A circular pattern of small stones on the ground at a Chukchi reindeer herder's camp symolises the reindeer herd. The Chukchi believe that these carefully selected and positioned stones will help keep...

Bryan and Cherry Alexander / At the end of the Chukchi Festival of Young Reindeer', Rita Votgyrgina, collects small stones to place on burial mound (Melgynvyn) where the powdered bones of sacrificed reindeer are buried, close to...

Bryan and Cherry Alexander / Nadia Takui, a Chukchi girl, dressed in a new Kerker (reindeer skin coverall) stands by a ritual fire at the entrance of a Yaranga (tent) at the start of the Chukchi 'Festival of the Young Reindeer' a...

Bryan and Cherry Alexander / In the evening of the first day of the Chukchi 'Festival of the Young Reindeer', Tamara plays her family's sacred drum in their Yaranga (tent). The Chukchi believe that the sounds of the drum calms th...

Bryan and Cherry Alexander / Yaroslava Votgyrgina, Chukchi girl aged 5 years, watches the proceedings of the Chukchi 'Festival of the Young Reindeer,' at a herders' camp. Iultinsky District, Chukotka, Siberia, Russia, August 2013...

Bryan and Cherry Alexander / In the evening of the first day of the Chukchi 'Festival of the Young Reindeer', Tamara plays her family's sacred drum in their Yaranga (tent). The Chukchi believe that the sounds of the drum calms th...