The American site HipHopDX has published a series of three short films, "Jamaican Journey", about Nas & Damian Marley's trip to Jamaica.

Armed with his camera, B+ (aka Brian Cross), a director for the production company Mochilla, follows the two artists during their stay in Kingston, where they had come to shoot the video for Promised Land. B+ knows them well, having shot some of their album covers and followed them on the European tour last year.
At the end of 2010, he naturally came along on the trip to Jamaica. "These three films are my logbook of that week", explains B+.
Part one: A visit to the Bob Marley Museum on Hope Road
Part two: Dubplates at Tuff Gong
Part three: Shooting the video for Promised Land in Trenchtown