Visible vortices spin from the propellers of a Raven C-130 as it makes an early-morning take-off from Sondrestrom.

Framed by low cloud hanging over Sondrestrom, another Raven mission to one of the ice-cap radar sites gets under way, while Raven 84 waits on the ramp. Rapidly-changing weather conditions on the ice-cap add to the difficulties of the re-supply operation.

The C-130D 70493, a star of the International Air Tattoo at Greenham Common in 1979, seen by the authors at Sondrestrom.

Raven 92, the C-130D-6 serial 70492, alongside DYE II during the off-loading of fuel, by means of gravity feed, into underground storage tanks: note that the engines are kept running throughout.

A head-on view of the C-130 on ice emphasizes the uneven nature of the terrain typical of the ice-cap.

A night out in the open at Sondrestrom leaves a covering of snow and ice on the Hercules, which will have to be removed before flying begins.

The Lockheed C-130D-6 70484, minus skis, taxies out at Goose Bay for a departure to HalI Beach, NWT, to service the Canadian DEW-line sites.

Raven 94 climbs out against the background of the sheer cliff face.

Raven 94 departs Sondrestrom Air Base for the ice-cap

Hercules 70494, with skis, is de-iced on a cold clear morning at Sondrestrom.

The view from the flight deck of a Hercules on short finals to runway 29 at Sondrestrom AB.