Golf in the clouds at the Omega European Masters

There are many quirks of playing golf at 1,500 metres above sea level.

The thin air makes the ball move further but when the clouds come in, the air feels anything but thin.

In the Swiss mountains of Crans-sur-Sierre Golf Club, what is called fog is often in fact cloud and on Thursday at the Omega European Masters, the clouds certainly played their part.

Here are some of the best images and videos from a remarkable day in Crans-Montana.