Arctic 30 protester's drawings from prison - in pictures

Greenpeace activist Philip Ball looks out from the defendants’ box at a court hearing in Murmansk Photograph: Reuters

A view of Ball's prison cell Photograph: Philip Ball via Greenpeace

A rubbing of drawings on the wall outside a cell Photograph: Philip Ball via Greenpeace

Phil's bed Photograph: Philip Ball via Greenpeace

Phil's left hand Photograph: Philip Ball via Greenpeace

A piece of metal on Ball's bed Photograph: Philip Ball via Greenpeace

The ‘relax room’ where Ball spent the day of his grandmother's funeral Photograph: Philip Ball via Greenpeace

The Greenpeace vessel Arctic Sunrise Photograph: Philip Ball via Greenpeace

Ball's latest letter sent from his prison in Murmansk Photograph: Philip Ball via Greenpeace

A rubbing of a drawing on the wall outside a cell Photograph: Philip Ball via Greenpeace