Soyuz 4 taxi-3 flight visiting crewmember VC South African Space Flight Participant SFP Mark Shuttleworth left visits with Expedition Four Flight Engineer Carl Walz right, arms folded in the Zvezda Service Module SM. Visible in the background is Expedition Four Mission Commander CDR Yuri Onufrienko back to the camera and Soyuz 4 CDR Yuri Gidzenko. Onufrienko and Gidzenko represent Rosaviakosmos.
