This control demonstrates the technique of sighting lines.
All the flags fit the description of ‘Clearing, E part’. So how are they distinguished from each other? The answer is ‘by sighting lines passing through points identified on the map and also the centre of the circle.’
For a control in an area feature, two sighting lines are needed (see also the solution map):
One sighting line in this example passes from the E stream/track crossing and the centre of the ruined tower.
The other sighting line passes from the centre of the track bend to the footbridge.
Only one flag is on both lines. From the decision point in the top photograph this is Flag C.
Solution: Flag C
All controls of the virtual course
Click on the “CONTROL #…” links to go to the page with the full description, images, solutions and comments about each control.
The virtual course can also be done in a simplified way, using only the images in the table below (click on the images to enlarge them).
| Control point | Control description | Map | Photo | Solution |
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| CONTROL #1 |  |  |  |  |
| CONTROL #2 |  |  |  |  |
| CONTROL #3 |  |  |  |  |
| CONTROL #4 |  |  |  |  |
| CONTROL #5 |  |  |  |  |
| CONTROL #6 |  |  |  |  |
| CONTROL #7 |  |  |  |  |
| CONTROL #8 |  |  |  |  |
| CONTROL #9 |  |  |  |  |
| CONTROL #10 |  |  |  |  |
| CONTROL #11 |  |  |  |  |
| CONTROL #12 |  |  |  |  |
| CONTROL #13 | | | | |