A look at South Africa's hidden Rhino Orphanage

Rhino calves are seen at the Rhino Orphanage in an undisclosed location near Mokopane, Limpopo province.

Director Yolande Van Der Merwe, 38, pets a rhino calf.

Carer Zanré Van Jaarsveld, 26, pets a rhino calf.

Carefully hidden in the bush of South Africa's Limpopo province, the Rhino Orphanage is the first specialised non-commercial centre that cares for orphaned and injured baby rhinos - most of whom have lost their mothers shot dead by poachers for their valuable horns - with the aim of releasing them back into the wild.

Carer Zanré feeds rhino calves with milk.

The eye of a rhino calf is seen at the Rhino Orphanage.

Rescue, rehabilitate, release: this is the motto that drives carers and volunteers living with the rhino calves they care for, at time sleeping with them for months, isolated from the outside world as the centre do not permit visitors due to fear of disclosing the location to poachers.

Rhino calves sleep under a tree.

Carer plays with a rhino calf.

Carer pets a rhino calf.