Two members of the Australian team fell and were injured, needing hospital treatment. One was 'walking wounded', but the Mountain Rescue Service had to be called to get the other unfortunate victim down off the course. After the second accident, shooting was suspended, with the result that not all the archers had the chance to complete the course.
Shooting is abandoned for tomorrow (which should have been the second day of the qualification round) due to the dangerous conditions. The folk in charge are trying to work out what to do next to enable the championships to proceed.
Here's a link to some photos, which give an idea of the terrain but don't really show the problem:
There's a whole load more piccies here, some of which give a rather better idea: